InChI=1S/C11H15N3O7/c12-6(10(17)18)1-2-8(15)13-7(11(19)20)5-14-4-3-9(16)21-14/h3-4,6-7H,1-2,5,12H2,(H,13,15)(H,17,18)(H,19,20)