InChI=1S/C11H14N4O5/c1-14-4-15(9-6(14)10(19)13-3-12-9)11-8(18)7(17)5(2-16)20-11/h3-5,7-8,11,16-18H,2H2,1H3/p+1/t5-,7-,8-,11?/m1/s1