InChI=1S/C19H20O9/c1-8(17(23)24)9-2-3-11-7-12(5-4-10(11)6-9)27-19-15(22)13(20)14(21)16(28-19)18(25)26/h2-8,13-16,19-22H,1H3,(H,23,24)(H,25,26)/t8?,13-,14-,15+,16-,19?/m0/s1