InChI=1/C12H12N2O4S/c13-19(16,17)8-9-2-1-3-11(6-9)14-12(15)10-4-5-18-7-10/h1-7H,8H2,(H,14,15)(H2,13,16,17)/f/h14H,13H2 5C3BDC00B5B44884