InChI=1S/C20H27FO4/c1-14(2)8-7-13-24-19(22)15-9-3-4-10-16(15)20(23)25-18-12-6-5-11-17(18)21/h5-6,11-12,14-16H,3-4,7-10,13H2,1-2H3