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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

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Accession:CHEBI:4925 term browser browse the term
Definition:A germacranolide that has formula C22H28O8.
Synonyms:related_synonym: Formula=C22H28O8;   InChI=1S/C22H28O8/c1-10-7-18(29-21(26)22(6)13(4)30-22)19-12(3)20(25)28-17(19)8-11(2)16(9-15(10)24)27-14(5)23/h7-8,13,15-19,24H,3,9H2,1-2,4-6H3/b10-7-,11-8-/t13-,15+,16+,17-,18-,19+,22-/m1/s1;   InChIKey=QGXSKKOWDFZPIV-CXDYXSGLSA-N;   SMILES=C[C@H]1O[C@@]1(C)C(=O)O[C@@H]1\\C=C(C)/[C@@H](O)C[C@H](OC(C)=O)\\C(C)=C/[C@H]2OC(=O)C(=C)[C@H]12
 xref: CAS:33853-88-2;   KEGG:C09429;   KNApSAcK:C00003268

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 21475
    chemical entity 21474
      atom 21460
        nonmetal atom 21337
          carbon atom 21046
            organic molecular entity 21046
              isoprenoid 9799
                terpene 9799
                  sesquiterpene 2707
                    germacrane 19
                      germacranolide 6
                        Eupacunoxin 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21475
    subatomic particle 21460
      composite particle 21460
        hadron 21460
          baryon 21460
            nucleon 21460
              atomic nucleus 21460
                atom 21460
                  main group element atom 21361
                    p-block element atom 21361
                      carbon group element atom 21148
                        carbon atom 21046
                          organic molecular entity 21046
                            organic group 19485
                              organic divalent group 19475
                                organodiyl group 19475
                                  carbonyl group 19452
                                    carbonyl compound 19452
                                      carboxylic ester 14414
                                        lactone 6039
                                          terpene lactone 1780
                                            sesquiterpene lactone 1630
                                              germacranolide 6
                                                Eupacunoxin 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.