InChI=1S/C17H22N4O4/c18-8-2-1-3-13(19)16-20-14(17(25)21(16)10-15(23)24)9-11-4-6-12(22)7-5-11/h4-7,9,13,22H,1-3,8,10,18-19H2,(H,23,24)/b14-9-/t13-/m0/s1