You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[7-chloro-6-(2-fluoro-6-hydroxyphenyl)-4-phenoxyphthalazin-1-yl]piperazine-1-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H20ClFN4O4
assistant