(S)-3-((R)-9-amino-4-methoxy-6-methyl-5,6,7,8-tetrahydro(1,3) dioxolo(4,5-g)isoquinolin-5-yl)-6,7-dimethoxy isobenzo-furan-1(3H)-one
(s)-3-((r)-9-amino-4-methoxy-6-methyl-5,6,7,8-tetrahydro(1,3) dioxolo(4,5-g)isoquinolin-5-yl)-6,7-dimethoxy isobenzo-furan-1(3h)-one