InChI=1S/C19H18O8/c1-11-10-14(26-17(24)8-6-15(20)21)12-4-2-3-5-13(12)19(11)27-18(25)9-7-16(22)23/h2-5,10H,6-9H2,1H3,(H,20,21)(H,22,23)