InChI=1S/C15H14O10S/c1-23-10-4-8(16)2-7-3-11-13(14(18)12(7)10)9(17)5-15(19,25-11)6-24-26(20,21)22/h2-4,16,18-19H,5-6H2,1H3,(H,20,21,22)