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 5-chloro-4-[2-(3-phenyl-1H-1,2,4-triazol-5-yl)pyrrolidin-1-yl]-1H-pyridazin-6-one .
user
C16H15ClN6O
assistant