InChI=1S/C21H30O9/c1-10(2)11-3-4-21(7-11)12(8-22)5-14(23)6-13(21)9-29-20-17(26)15(24)16(25)18(30-20)19(27)28/h5,11,13,15-18,20,22,24-26H,1,3-4,6-9H2,2H3,(H,27,28)