You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[(2-amino-3-phenylpropanoyl)-[(2-methylpropan-2-yl)oxycarbonyl]amino]-3-oxo-3-pyrrolidin-2-ylpropanoic acid ?
user
C21H29N3O6
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