InChI=1S/C21H30O9/c1-9(2)11-4-5-12-14(23)6-13(22)10(3)21(12,7-11)8-29-20-17(26)15(24)16(25)18(30-20)19(27)28/h5,10-11,14-18,20,23-26H,1,4,6-8H2,2-3H3,(H,27,28)/t10?,11?,14?,15?,16?,17?,18?,20?,21-/m0/s1