You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-butyl-3-oxo-5-(5-phenylpyridin-3-yl)oxy-1H-isoindol-1-yl] 2,2,2-trifluoroacetate into its molecular formula.
user
C25H21F3N2O4
assistant