InChI=1/C20H23FN2O5/c1-26-11-9-23(10-12-27-17-7-5-16(21)6-8-17)20(25)15-3-2-4-18(13-15)28-14-19(22)24/h2-8,13H,9-12,14H2,1H3,(H2,22,24)/f/h22H2 4DBA6DC341AA518B