InChI=1/C12H12N2O5/c1-6-9(3-2-4-10(6)14(18)19)13-11(15)7-5-8(7)12(16)17/h2-4,7-8H,5H2,1H3,(H,13,15)(H,16,17)/p-1/t7-,8+/m0/s1/fC12H11N2O5/h13H/q-1 611FB423E58C22C0