You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[[(E)-2-fluoro-3-[4-[2-fluoro-4-(propan-2-ylamino)phenyl]-2,5-dimethylphenyl]prop-2-enoyl]amino]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H26F2N2O3
assistant