InChI=1S/C21H32O10/c1-19(2)5-10-20(3)4-9(23)11(20)8(6-22)16(21(10,29)7-19)31-18-14(26)12(24)13(25)15(30-18)17(27)28/h9-10,12-16,18,22-26,29H,4-7H2,1-3H3,(H,27,28)/t9?,10?,12?,13?,14?,15?,16?,18?,20-,21?/m1/s1