You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-oxo-2-(2-thiophen-2-ylethylcarbamoylamino)ethyl] 3-(5-cyano-2,4-dimethyl-6-oxo-1H-pyridin-3-yl)propanoate into its molecular formula.
user
C20H22N4O5S
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