InChI=1S/C26H28O7/c1-5-32-23-22(18-9-11-20(27)12-10-18)26(25(30)31-4,33-24(23)29)15-17-7-13-21(28)19(14-17)8-6-16(2)3/h6-7,9-14,27-28H,5,8,15H2,1-4H3/t26-/m1/s1