You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name tert-butyl (4S)-4-[(E,1S)-1-(2-diazoacetyl)oxy-3-phenylprop-2-enyl]-2,2-dimethyl-1,3-oxazolidine-3-carboxylate into its molecular formula.
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C21H27N3O5
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