InChI=1S/C15H17N3O4/c16-13(19)6-5-12(15(21)22)18-14(20)7-9-8-17-11-4-2-1-3-10(9)11/h1-4,8,12,17H,5-7H2,(H2,16,19)(H,18,20)(H,21,22)/p-1