InChI=1S/C14H18O8S/c1-14(2)12(21-14)7-9-5-8(3-4-10(9)15)6-11(13(16)17)22-23(18,19)20/h3-5,11-12,15H,6-7H2,1-2H3,(H,16,17)(H,18,19,20)