InChI=1/C19H17N3O4/c20-19(24)14-6-2-5-12-11-3-1-4-13(11)18(21-17(12)14)15-9-10(22(25)26)7-8-16(15)23/h1-3,5-9,11,13,18,21,23H,4H2,(H2,20,24)/t11-,13-,18-/m1/s1/f/h20H2 4C3B86CD53295AE1