InChI=1S/C16H14O10S/c1-25-14-5-8(2-3-13(14)26-27(22,23)24)4-12(20)16(21)15-10(18)6-9(17)7-11(15)19/h2-3,5-7,17-19H,4H2,1H3,(H,22,23,24)