InChI=1S/C23H28O5/c1-10(2)23-12(24)9-11(3)14(23)13-15(19(23)26)22-8-6-7-21(4,5)18(22)17(16(13)25)28-20(22)27/h9-10,14,16-18,25H,6-8H2,1-5H3