You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (2R)-N-[(2R)-butan-2-yl]-2-[(3-chlorophenyl)methyl-(2-phenylsulfanylacetyl)amino]propanamide using the IUPAC nomenclature.
user
C22H27ClN2O2S
assistant