InChI=1S/C24H26O6/c1-13(2)6-5-7-14(3)8-9-15-17(25)11-21-22(23(15)27)24(28)16-10-20(29-4)18(26)12-19(16)30-21/h6,8,10-12,25-27H,5,7,9H2,1-4H3/b14-8+