InChI=1/C12H12N2O4S3/c1-2-18-7-10-11(15)14(12(19)20-10)8-3-5-9(6-4-8)21(13,16)17/h3-7H,2H2,1H3,(H2,13,16,17)/b10-7+/f/h13H2 5E28DBBBE48DDD27