InChI=1S/C13H14N2O4S2/c16-7-10(12-15-9(13(18)19)3-5-21-12)14-11(17)6-8-2-1-4-20-8/h1-2,4,7,10,12H,3,5-6H2,(H,14,17)(H,18,19)/t10-,12-/m1/s1