InChI=1S/C23H28O6/c1-12-5-14(25)6-15(26)18(12)20(27)29-16-8-22(4)17-9-21(2,3)11-23(17,28)7-13(10-24)19(16)22/h5-7,10,16-17,19,25-26,28H,8-9,11H2,1-4H3