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