Synonyms: Spiro[5H,6H-5a,9a-(iminomethano)-1H-cyclopent[f]indolizine-7(8H),2'-indoline]-3',5,10-trione,2,3,8a,9-tetrahydro-8,8-dimethyl- (8CI); (+)-Brevianamide A; Brevianamid A;Brevianamide A; NSC 208423;Spiro[5H,6H-5a,9a-(iminomethano)-1H-cyclopent[f]indolizine-7(8H),2'-[2H]indole]-3',5,10(1'H)-trione,2,3,8a,9-tetrahydro-8,8-dimethyl-, [5aR-(5aa,7b,8ab,9aa)]-