You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[4-(5-chlorofuran-2-carbonyl)-1,4-diazepane-1-carbonyl]-4,5-dihydro-1H-pyridazin-6-one into molecular formula.
user
C15H17ClN4O4
assistant