InChI=1/C17H22O11/c18-8(2-4-11(20)21)5-7-1-3-10(9(19)6-7)27-17-14(24)12(22)13(23)15(28-17)16(25)26/h1,3,6,8,12-15,17-19,22-24H,2,4-5H2,(H,20,21)(H,25,26)