InChI=1S/C16H18O12S/c1-5-2-6(18)10-8(26-5)3-7(19)11(12(10)20)16-14(22)13(21)15(9(4-17)27-16)28-29(23,24)25/h2-3,9,13-17,19-22H,4H2,1H3,(H,23,24,25)