InChI=1S/C10H14N2O7S/c1-10(12-11,9(14)15)5-6-2-3-7(13)8(4-6)19-20(16,17)18/h2-4,12-13H,5,11H2,1H3,(H,14,15)(H,16,17,18)/t10-/m0/s1