You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[(3-bromophenyl)methyl]-4-(4-chlorophenoxy)-N-[(2R)-1-(methylamino)-1-oxo-3-phenylpropan-2-yl]butanamide .
user
C27H28BrClN2O3
assistant