InChI=1S/C18H17N3O4/c1-11-13(17(23)25-2)10-14-15(19-11)21(18(24)20-16(14)22)9-8-12-6-4-3-5-7-12/h3-7,10H,8-9H2,1-2H3,(H,20,22,24)