InChI=1S/C25H28O4/c1-6-25(4,5)19-11-17-22(12-21(19)27)28-13-18-15-9-10-20(26)16(8-7-14(2)3)23(15)29-24(17)18/h6-7,9-12,18,24,26-27H,1,8,13H2,2-5H3/t18-,24-/m0/s1