InChI=1S/C21H26O10/c1-9-2-3-12-14(9)21-11(4-5-20(12,8-23)31-21)10(18(27)30-21)7-28-19-17(26)16(25)15(24)13(6-22)29-19/h4-5,12-17,19,22-26H,1-3,6-8H2/t12-,13+,14+,15+,16-,17+,19+,20+,21+/m0/s1