5-(4,5-Dimethoxy-7-methyl-naphthalen-1-yl)-8-methoxy-1,2,3-trimethyl-1,2-dihydro-isoquinolin-6-ol 6-isoquinolinol, 5-(4,5-dimethoxy-7-methyl-1-naphthalenyl)-1,2,3,4-tetrahydro-8-methoxy-1,2,3-trimethyl-, (1R,3R)- Ancistrocongoline C InChI=1/C26H31NO4/c1-14-10-18-17(8-9-21(29-5)26(18)22(11-14)30-6)25-19-12-15(2)27(4)16(3)24(19)23(31-7)13-20(25)28/h8-11,13,15-16,28H,12H2,1-7H3/t15-,16-/m1/s rel-(1R,3R)-5-(4,5-dimethoxy-7-methyl-1-naphthyl)-8-methoxy-1,2,3-trimethyl-1,2,3,4-tetrahydroisoquinolin-6-ol