Synonyms: (2s,2's,4s)-1'-hydroxy-2'-methyl-4-(4-oxoquinazolin-3(4h)-yl)-1',9a'-dihydro-3h-spiro[furan-2,9'-imidazo[1,2-a]indole]-3',5(2'h,4h)-dione;Fumitremorgin H;Tryptoquivaline H;AC1Q6EAY;AC1L4MS4;KST-1A7351;AR-1A3379;(2S,3'S,4S)-3-hydroxy-2-methyl-3'-(4-oxoquinazolin-3-yl)spiro[2,3a-dihydroimidazo[1,2-a]indole-4,5'-oxolane]-1,2'-dione