The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/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.
A carbotricyclic compound that is decahydrocyclobuta[1,2-a:3,4-a']dicyclopentene substituted by prop-1-en-2-yl, methyl and methyl groups at positions 1, 3a and 6, respectively (the 1S,3aS,3bR,6S,6aS,6bS-stereoisomer). It is a sesquiterpene initially isolated from the tropical marine sponge Cymbastela hooperi.