InChI=1S/C14H18O8S/c1-8-3-12(16)14(22-23(17,18)19)13(21-8)6-9-4-10(15)7-11(5-9)20-2/h4-5,7-8,13-15H,3,6H2,1-2H3,(H,17,18,19)