InChI=1S/C22H29NO4/c1-9-4-21-7-12-17-20(3)5-11(25)6-22(17)18(21)16(27-10(2)24)13(9)15(26)14(21)19(22)23(12)8-20/h11-19,25-26H,1,4-8H2,2-3H3