InChI=1S/C22H28O7/c1-26-19-8-13(5-7-17(19)24)4-6-16-11-15(23)12-18(29-16)14-9-20(27-2)22(25)21(10-14)28-3/h5,7-10,15-16,18,23-25H,4,6,11-12H2,1-3H3