The molecule is a dicarboxylic acid anion obtained by deprotonation of both carboxy groups of gibberellin A15 (diacid form). It is a dicarboxylic acid dianion and a gibberellin carboxylic acid anion. It is a conjugate base of a gibberellin A15 (diacid form).
(1R,2S,3S,4R,8R,9R,12R)-8-(hydroxymethyl)-4-methyl-13-methylidenetetracyclo[10.2.1.01,9.03,8]pentadecane-2,4-dicarboxylate