InChI=1S/C16H16O9S/c1-23-15-4-8(2-3-11(15)17)16-13(19)7-10-12(18)5-9(6-14(10)24-16)25-26(20,21)22/h2-6,13,16-19H,7H2,1H3,(H,20,21,22)/t13-,16-/m1/s1