InChI=1S/C24H34O4/c1-15(9-7-11-16(2)23(26)27)10-8-13-24(6)14-12-20-19(5)21(25)17(3)18(4)22(20)28-24/h10-11,25H,7-9,12-14H2,1-6H3,(H,26,27)/b15-10+,16-11+/t24-/m1/s1