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 (6-ethoxy-6-oxohexyl) 1-ethyl-5-[(4-methylpyridin-3-yl)amino]-6-oxo-3-thiophen-3-ylpyridazine-4-carboxylate;(4-fluorophenyl)methyl 1-ethyl-5-(isoquinolin-4-ylamino)-6-oxo-3-thiophen-3-ylpyridazine-4-carboxylate .
user
C52H51FN8O8S2
assistant