(S)-3-((R)-9-bromo-4-methoxy-6-methyl-5,6,7,8-tetrahydro-(1,3)dioxolo(4,5-g)isoquino-lin-5-yl)-6,7-dimethoxyisobenzofuran-1(3H)-one
(s)-3-((r)-9-bromo-4-methoxy-6-methyl-5,6,7,8-tetrahydro-(1,3)dioxolo(4,5-g)isoquino-lin-5-yl)-6,7-dimethoxyisobenzofuran-1(3h)-one