InChI=1S/C19H20N2O3/c1-10-12(8-22)11-6-17-19(7-16(20-17)13(11)9-24-10)14-4-2-3-5-15(14)21-18(19)23/h2-5,8,11,13,16-17,20H,6-7,9H2,1H3,(H,21,23)/t11-,13+,16-,17-,19-/m0/s1