InChI=1S/C16H14O9S/c1-23-16-11(17)6-12-13(15(16)19)14(18)10(7-24-12)8-2-4-9(5-3-8)25-26(20,21)22/h2-6,10,17,19H,7H2,1H3,(H,20,21,22)