InChI=1S/C24H30O4/c1-16(5-9-20-23(2,3)21-11-13-24(20,4)28-21)12-14-26-18-8-6-17-7-10-22(25)27-19(17)15-18/h6-8,10,12,15,20-21H,5,9,11,13-14H2,1-4H3/b16-12-