You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2S)-1-[(5-methyl-1,2-oxazol-3-yl)amino]-1-oxopropan-2-yl]piperidine-4-carboxamide into its molecular formula.
user
C13H20N4O3
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