Stemonine【C17 alkaloid】

(1S,3aβ,10aα,10bα)-Decahydro-1α-methyl-8α-[(2S,4S)-tetrahydro-4-methyl-5-oxofuran-2-yl]-2H-furo[3,2-c]pyrrolo[1,2-a]azepin-2-one