InChI=1/C19H18N2O3/c1-11-5-7-12(8-6-11)18-14-4-2-3-13(14)17-15(21(23)24)9-10-16(22)19(17)20-18/h2-3,5-10,13-14,18,20,22H,4H2,1H3/t13-,14+,18+/m0/s1 31D4E9D65EFA5BD9