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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:8041 term browser browse the term
Definition:A germacranolide isolated from Elephantopus mollis and has been shown to exhibit antineoplastic activity.
Synonyms:exact_synonym: (3aR,4S,6Z,8S,11S,11aS)-8-ethoxy-6,10-dimethyl-3-methylidene-2-oxo-2,3,3a,4,5,8,11,11a-octahydro-8,11-epoxycyclodeca[b]furan-4-yl 2-methylprop-2-enoate
 related_synonym: Formula=C21H26O6;   InChI=1S/C21H26O6/c1-7-24-21-9-12(4)8-15(25-19(22)11(2)3)16-14(6)20(23)26-18(16)17(27-21)13(5)10-21/h9-10,15-18H,2,6-8H2,1,3-5H3/b12-9-/t15-,16+,17-,18-,21-/m0/s1;   InChIKey=YNGLXZUKGYZCFL-YUZMFRNZSA-N;   SMILES=[H][C@@]12O[C@@](OCC)(\\C=C(C)/C[C@H](OC(=O)C(C)=C)[C@@]3([H])C(=C)C(=O)O[C@]13[H])C=C2C
 xref: CAS:55306-08-6;   KEGG:C09527;   KNApSAcK:C00003348;   PMID:7411406;   Reaxys:1663128

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  CHEBI ontology 19770
    role 19718
      biological role 19717
        biochemical role 19222
          metabolite 19199
            phantomolin 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19655
                    p-block element atom 19655
                      carbon group element atom 19550
                        carbon atom 19539
                          organic molecular entity 19539
                            organic group 18488
                              organic divalent group 18481
                                organodiyl group 18481
                                  carbonyl group 18384
                                    carbonyl compound 18384
                                      carboxylic ester 14061
                                        lactone 5920
                                          terpene lactone 1769
                                            sesquiterpene lactone 1618
                                              germacranolide 6
                                                phantomolin 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.