InChI=1S/C19H20N2O3/c1-12(7-8-13-5-3-2-4-6-13)21-10-9-14-11-15(22)18(23)16(17(14)21)19(20)24/h2-6,9-12,22-23H,7-8H2,1H3,(H2,20,24)