You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2-chlorophenyl)methyl N-[(5R)-6-amino-6-oxo-5-[[(1R)-1-phenylethyl]amino]hexyl]carbamate by IUPAC nomenclature, provide its molecular formula.
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C22H28ClN3O3
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