InChI=1S/C28H25FN2O4/c29-23-18-26(31-17-16-25(32)30-27(31)33)35-24(23)19-34-28(20-10-4-1-5-11-20,21-12-6-2-7-13-21)22-14-8-3-9-15-22/h1-17,23-24,26H,18-19H2,(H,30,32,33)/t23-,24+,26+/m0/s1