InChI=1S/C17H22O11/c1-6(5-18)2-8(20)11-9(21)3-7(19)4-10(11)27-17-14(24)12(22)13(23)15(28-17)16(25)26/h3-4,6,12-15,17-19,21-24H,2,5H2,1H3,(H,25,26)