croomine

(2R,3'S,4R)-1',2',3,3',4,5',6',7',8',9'aα-Decahydro-4-methyl-3'-[(2S,4S)-tetrahydro-4-methyl-5-oxofuran-2-yl]spiro[furan-2(5H),9'-[9H]pyrrolo[1,2-a]azepin]-5-one