Synonyms: 2H-Pyrrol-2-one,3-acetyl-1,5-dihydro-4-hydroxy-5-[[4-(3-methyl-2-butenyl)-1H-indol-3-yl]methyl]-,(5S)- (9CI); 2H-Pyrrol-2-one,3-acetyl-1,5-dihydro-4-hydroxy-5-[[4-(3-methyl-2-butenyl)-1H-indol-3-yl]methyl]-,(S)-; Disecocyclopiazonic acid, dehydro- (8CI); Dehydrodisecocyclopiazonicacid; b-Cyclopiazonic acid