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 labdane diterpenoid that is labdane which has been hydroxylated at position 5 of the decalin ring and in which the 3-methylpentyl substituent (also at position 5 of the decalin ring) has been dehydrogenated to introduce a trans double bond at the 3-4 position and hydroxylated at position 5.