InChI=1S/C22H28O6/c1-6-7-12-9-16(24)28-20-13-10-15(22(4,5)26)27-21(13)18(19(25)17(12)20)14(23)8-11(2)3/h9,11,15,25-26H,6-8,10H2,1-5H3