InChI=1S/C23H28F4N2O4/c1-2-13-33-22(32)16-7-11-28(12-8-16)20(30)15-5-9-29(10-6-15)21(31)18-14-17(23(25,26)27)3-4-19(18)24/h3-4,14-16H,2,5-13H2,1H3