You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule tert-butyl (2R,3S,5R)-2-[(1R)-1-amino-2-oxopentyl]-5-cyano-3-[(Z)-prop-1-enyl]pyrrolidine-1-carboxylate .
user
C18H29N3O3
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