label: 2-(1-hydroxy-3-(3a,4,5,7a-tetrahydro-1,3,5,7-tetramethyl-5,1(2,3-dimethylpropeno)-1H-inden-4-yl)-2-propenylidene)pyrrolizidine-1,3-dione
label_lc: 2-(1-hydroxy-3-(3a,4,5,7a-tetrahydro-1,3,5,7-tetramethyl-5,1(2,3-dimethylpropeno)-1h-inden-4-yl)-2-propenylidene)pyrrolizidine-1,3-dione