1',1-Dihydroxy-4-(6,8-dihydroxy-1R,3R-dimethyl-1,2,3,4- tetrahydroisoquinoline-5M-yl)-4"-(6,8'-dihydroxy-1"R,3 R-dimethyl-1',2",3,4'-tetrahydroisoquinoline-5"-P-yl)-2,2-binaphthalene bis(trifluoroacetic acid salt) NSC670697