InChI=1S/C16H16O9S/c1-23-15-4-8(2-3-13(15)25-26(20,21)22)16-12(19)7-10-11(18)5-9(17)6-14(10)24-16/h2-6,12,16-19H,7H2,1H3,(H,20,21,22)/t12-,16-/m1/s1