InChI=1S/C22H26O6/c1-10(2)7-8-15(24)22(5)12(4)28-21-16-13(9-14(23)17(21)22)19(26)20(27-6)11(3)18(16)25/h7,9,12,15,23-24H,8H2,1-6H3/t12-,15-,22-/m1/s1