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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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Path 1
Term Annotations click to browse term
  CHEBI ontology 0
    chemical entity 0
      atom 0
        nonmetal atom 0
          carbon atom 0
            organic molecular entity 0
              isoprenoid 0
                terpene 0
                  sesquiterpene 0
                    germacrane 0
                      germacranolide 0
                        Eupacunoxin 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 0
    subatomic particle 0
      composite particle 0
        hadron 0
          baryon 0
            nucleon 0
              atomic nucleus 0
                atom 0
                  main group element atom 0
                    p-block element atom 0
                      carbon group element atom 0
                        carbon atom 0
                          organic molecular entity 0
                            organic group 0
                              organic divalent group 0
                                organodiyl group 0
                                  carbonyl group 0
                                    carbonyl compound 0
                                      carboxylic ester 0
                                        lactone 0
                                          terpene lactone 0
                                            sesquiterpene lactone 0
                                              germacranolide 0
                                                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.