6703-27-1;7,8-Didehydro-4,5alpha-epoxy-3-methoxy-17-methylmorphinan-6alpha-ol acetate;Acetylcodeine;Codeine, acetyl-;Morphinan-6-alpha-ol, 7,8-didehydro-4,5-alpha-epoxy-3-methoxy-17-methyl-, acetate;Morphinan-6-ol, 7,8-didehydro-4,5-epoxy-3-methoxy-17-methyl-, acetate, (5alpha,6alpha)-