InChI=1S/C10H12N2O7/c13-3-6-5(14)1-7(19-6)12-2-4(9(16)17)8(15)11-10(12)18/h2,5-7,13-14H,1,3H2,(H,16,17)(H,11,15,18)/t5-,6+,7-/m0/s1