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