InChI=1/C13H8ClNO4S/c14-8-1-4-10(5-2-8)20-12-7-9(15(18)19)3-6-11(12)13(16)17/h1-7H,(H,16,17)/p-1/fC13H7ClNO4S/q-1 D5C0F6981BD134FF