InChI=1S/C18H16O10S/c1-23-10-6-4-3-5-9(10)15-18(28-29(20,21)22)14(19)13-11(27-15)7-12-16(17(13)24-2)26-8-25-12/h3-7,15,18H,8H2,1-2H3,(H,20,21,22)