InChI=1S/C22H26O6/c1-26-19-9-8-13-10-15(19)16-12-14(20(25)22(28-3)21(16)27-2)6-4-5-7-17(23)18(24)11-13/h8-10,12,18,24-25H,4-7,11H2,1-3H3