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 2-[(2S)-4-(cyclopropylamino)-2-(3,4-dichlorophenyl)butyl]-1-oxo-3,4-dihydrobenzo[g][1,4]benzothiazepine-6-carbonitrile using the IUPAC nomenclature.
user
C27H25Cl2N3OS
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