InChI=1/C15H17N3O3/c1-8-13(9(2)18-17-8)16-15(19)14-10(3)20-11-6-4-5-7-12(11)21-14/h4-7,10,14H,1-3H3,(H,16,19)(H,17,18)/t10-,14+/m1/s1/f/h16-17H E19E26B1EB1B120E