InChI=1S/C16H14O9S/c1-23-12-3-2-8(4-10(12)18)13-7-11(19)16-14(24-13)5-9(17)6-15(16)25-26(20,21)22/h2-6,13,17-18H,7H2,1H3,(H,20,21,22)/t13-/m0/s1