You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[5-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-2H-1,2-oxazol-3-yl]-2-methylphenyl]prop-2-enamide into molecular formula.
user
C20H15Cl2F3N2O2
assistant