InChI=1S/C19H18O11S/c20-4-5-27-12-3-1-2-11(8-12)19-18(23)17(22)16-14(21)9-13(10-15(16)30-19)28-6-7-29-31(24,25)26/h1-3,8-10,20-21,23H,4-7H2,(H,24,25,26)