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.
Any member of the class of 16-membered macrolide natural products, or their analogues, normally containing a double bond or its epoxide at positions 12-13 and bearing hydroxy groups at positions 4 and 8, methyl groups at positions 5, 5, 7, and 9, an oxo group at position 6, and a 1-(2-substituted-1,3-thiazol-4-yl)prop-1-en-2-yl substituent at position 15.