You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2R)-1-(4-acetylanilino)-1-oxopropan-2-yl] 2-(5-thiophen-2-yltetrazol-2-yl)acetate into its molecular formula.
user
C18H17N5O4S
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