The molecule is a monocarboxylic acid anion that is the conjugate base of ent-kaur-16-en-19-oic acid, obtained by deprotonation of the carboxy group. It is a conjugate base of an ent-kaur-16-en-19-oic acid.
(1S,4S,5R,9S,10R,13R)-5,9-dimethyl-14-methylidenetetracyclo[11.2.1.01,10.04,9]hexadecane-5-carboxylate