InChI=1S/C12H15N3O7/c16-5-9(14-12(20)11(19)13-6-17)10(18)7-1-3-8(4-2-7)15(21)22/h1-4,9-10,16-18H,5-6H2,(H,13,19)(H,14,20)/t9-,10-/m1/s1