InChI=1S/C16H18O12S/c17-9-3-1-8(5-12(9)28-29(24,25)26)2-4-13(20)27-16(15(22)23)6-10(18)14(21)11(19)7-16/h1-5,10-11,14,17-19,21H,6-7H2,(H,22,23)(H,24,25,26)/b4-2+/t10?,11?,14?,16-