The molecule is a C19-gibberellin, initially identified in Pharbitis nil. It differs from gibberellin A1 in lacking a beta-OH at C-2 but possessing one at C-3 (gibbane numberings). It has a role as a plant metabolite. It is a C19-gibberellin, a lactone and a gibberellin monocarboxylic acid.
(1R,2R,5S,8S,9S,10R,11R,13R)-5,13-dihydroxy-11-methyl-6-methylidene-16-oxo-15-oxapentacyclo[9.3.2.15,8.01,10.02,8]heptadecane-9-carboxylic acid