InChI=1S/C15H16O10S/c16-8(4-10-11(18)5-9(17)6-12(10)19)1-7-2-13(20)15(14(21)3-7)25-26(22,23)24/h2-3,5-6,8,16-21H,1,4H2,(H,22,23,24)