InChI=1S/C25H28O6/c1-13(2)5-6-15(14(3)4)9-18-20(28)11-21(29)24-22(30)12-23(31-25(18)24)17-8-7-16(26)10-19(17)27/h7-8,10-11,15,23,26-29H,1,3,5-6,9,12H2,2,4H3/t15-,23+/m1/s1