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system
Name the molecular formula for the molecule established as N-[(1S)-1-(4-chlorophenyl)-3-[(2S)-2-methyl-3,4-dihydro-2H-1,5-benzothiazepin-5-yl]-3-oxopropyl]acetamide using the IUPAC nomenclature.
user
C21H23ClN2O2S
assistant