You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(2-methylsulfanyl-6-oxo-1H-pyrimidin-4-yl)-6-oxo-1-phenyl-4,5-dihydropyridazine-3-carboxamide .
user
C16H15N5O3S
assistant