InChI=1S/C8H13N3O7/c9-11-6(16)8(10-7(11)17)5(15)4(14)3(13)2(1-12)18-8/h2-5,12-15H,1,9H2,(H,10,17)/t2-,3-,4+,5-,8+/m1/s1