InChI=1S/C21H30O9/c1-8(2)10-7-21(4)9(3)12(22)6-13(23)11(21)5-14(10)29-20-17(26)15(24)16(25)18(30-20)19(27)28/h5,9-10,13-18,20,23-26H,1,6-7H2,2-4H3,(H,27,28)/t9?,10?,13?,14?,15?,16?,17?,18?,20?,21-/m1/s1