You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S,4R)-4-anilino-1-[2-[(2-methylpropan-2-yl)oxycarbonylamino]acetyl]pyrrolidine-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H27N3O5
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