Synonyms: Fumitremorgin F;Tryptoquivaline F;AC1L49O8;(2S,3'R,3aR,4S)-2-methyl-3'-(4-oxoquinazolin-3-yl)spiro[3,3a-dihydro-2H-imidazo[1,2-a]indole-4,5'-oxolane]-1,2'-dione;61897-89-0;66212-51-9;Spiro(furan-2(5H),9'-(9H)imidazo(1,2-a)indole)-3',5(2'H)-dione, 1',3,4,9'a-tetrahydro-2'-methyl-4-(4-oxo-3(4H)-quinazolinyl)-, (2S,2'S,4S,9'aR)-