You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[(1S)-1-(3-chloro-4-fluorophenyl)ethyl]-6-(4-chlorophenyl)-2-(1-methylpyrazol-4-yl)-3-oxopyridazine-4-carboxamide .
user
C23H18Cl2FN5O2
assistant