InChI=1S/C16H12O11S/c17-7-2-11(20)13-12(3-7)27-16(15(22)14(13)21)8-4-9(18)6(1-10(8)19)5-26-28(23,24)25/h1-4,17-20,22H,5H2,(H,23,24,25)