4H-Dibenzo[de,g]quinolin-1-ol,5,6,6a,7-tetrahydro-2,3,9,10-tetramethoxy-6-methyl-8-[4-[(1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-isoquinolinyl)methyl]phenoxy]-,[S-(R*,R*)]-