InChI=1S/C23H28O5/c1-2-3-4-8-17-26-22(24)15-16-23(25)27-18-19-11-13-21(14-12-19)28-20-9-6-5-7-10-20/h5-7,9-14H,2-4,8,15-18H2,1H3