InChI=1S/C23H32O2/c1-16(12-21(24)25)10-9-11-17(2)18-13-19(22(3,4)5)15-20(14-18)23(6,7)8/h9-15H,1-8H3,(H,24,25)/b10-9+,16-12+,17-11+