You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4S)-4-butan-2-yl-3-[(1E,3E)-2-methyl-1-(phenylmethoxymethoxy)penta-1,3-dienyl]-1,3-oxazolidin-2-one into its molecular formula.
user
C21H29NO4
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