1H-[1]benzoxepino[2,3,4-ij]isoquinoline, 2,3,12,12a-tetrahydro-6,9,10-trimethoxy-1-methyl- 6,9,10-trimethoxy-1-methyl-2,3,12,12a-tetrahydro-1H-[1]benzoxepino[2,3,4-ij]isoquinoline InChI=1/C20H23NO4/c1-21-8-7-12-5-6-15(22-2)20-19(12)14(21)9-13-10-17(23-3)18(24-4)11-16(13)25-20/h5-6,10-11,14H,7-9H2,1-4H