You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-[4-(4-chlorophenyl)piperazin-1-yl]-2-oxoethyl]-2-(3,5-dimethyl-1-phenylpyrazol-4-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C25H28ClN5O2
assistant