You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(3,4-dichlorophenyl)-N-[2-(3-phenyl-1,2,4-oxadiazol-5-yl)phenyl]furan-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H15Cl2N3O3
assistant