InChI=1S/C14H16O8S/c1-20-12-3-9(2-10(15)5-12)4-13-6-11(16)7-14(22-13)8-21-23(17,18)19/h2-3,5-6,14-15H,4,7-8H2,1H3,(H,17,18,19)