InChI=1S/C19H18O8S/c1-11(27-28(23,24)25)10-14(12-6-3-2-4-7-12)16-17(21)13-8-5-9-15(20)18(13)26-19(16)22/h2-9,11,14,20,22H,10H2,1H3,(H,23,24,25)