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