Synonyms: Maleopimaric acid;AI3-19189;(4alpha,8alpha,12alpha,13R,14R)-16-Isopropyl-17,19-dinoratis-15-ene-4,13,14-tricarboxylic acid, cyclic 13,14-anhydride;17,19-Dinoratis-15-ene-4,13,14-tricarboxylic acid, 16-(1-methylethyl)-, cyclic 13,14-anhydride, (4alpha,8alpha,12alpha,13R,14R)-;(3aR,3bS,5aR,6R,9aR,9bR,11S,11aR)-6,9a-dimethyl-1,3-dioxo-12-(propan-2-yl)tetradecahydro-1H-3b,11-ethenophenanthro[1,2-c]furan-6-carboxylic acid