InChI=1S/C23H24O5/c1-12(2)5-8-16-20(25)17(9-6-13(3)4)23-19(22(16)27)21(26)15-10-7-14(24)11-18(15)28-23/h5-7,10-11,24-25,27H,8-9H2,1-4H3