You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named methyl 5-(4-methoxyphenyl)-1-(6-oxo-1H-pyridazin-3-yl)pyrazole-3-carboxylate is given. What is its corresponding molecular formula?
user
C16H14N4O4
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