4,5α-epoxy-2-[(4,5α-epoxy-6α-hydroxy-17-methyl-7,8-didehydromorphinan-3-yl)oxy]-3-methoxy-17-methyl-7,8-didehydromorphinan-6α-ol (3-O-(codein-2-yl)morphine) (as per EP)
4,5α-epoxy-2-[(4,5α-epoxy-6α-hydroxy-17-methyl-7,8-didehydromorphinan-3-yl)oxy]-3-methoxy-17-methyl-7,8-didehydromorphinan-6α-ol (3-O-(codein-2-yl)morphine) (as per EP)