Synonyms: Spiro[benz[cd]indole-5(1H),2'(5'H)-furan]-5'-one,8-chloro-3,4-dihydro-4'-methyl-4-(methylamino)-, cis-(?à)-; 8-Chlororugulovasine A;Spiro[benz[cd]indole-5(1H),2'(5'H)-furan]-5'-one,8-chloro-3,4-dihydro-4'-methyl-4-(methylamino)-, cis-; Toxin B (Penicilliumislandicum)