InChI=1S/C26H28O6/c1-14(2)6-9-18-21(31-5)13-22-23(24(18)29)25(30)19(10-7-15(3)4)26(32-22)17-11-8-16(27)12-20(17)28/h6-8,11-13,27-29H,9-10H2,1-5H3