Synonyms: 4aa,4bb-Gibbane-1a,10b-dicarboxylic acid, 2b,7-dihydroxy-1,4a-dimethyl-8-methylene-(8CI); Lupinus gibberellin I (7CI); 1H-7,9a-Methanobenz[a]azulene,gibbane-1,10-dicarboxylic acid deriv.; 2b-Hydroxy-GA53; 4aa,4bb-Gibbane-1a,10b-dicarboxylic acid, 2b,7-dihydroxy-1,4a-dimethyl-8-methylene-,(-)-; Gibberellin A18