InChI=1S/C17H18O8S/c1-3-4-10-7-14(19)24-16-11-5-6-17(2,9-23-26(20,21)22)25-13(11)8-12(18)15(10)16/h5-8,18H,3-4,9H2,1-2H3,(H,20,21,22)