InChI=1S/C23H32O4/c1-15(8-6-10-16(2)22(25)26)9-7-12-23(5)13-11-19-14-20(24)17(3)18(4)21(19)27-23/h9-10,14,24H,6-8,11-13H2,1-5H3,(H,25,26)/b15-9+,16-10+/t23-/m1/s1