InChI=1S/C24H28O5/c1-14(2)4-5-15(3)6-8-18-17(10-11-20(26)24(18)28)23-13-21(27)19-9-7-16(25)12-22(19)29-23/h6-7,9-12,14,23,25-26,28H,4-5,8,13H2,1-3H3/b15-6+