You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl N-[(2R,3R)-5-[(4-chlorophenyl)methyl]-2-methyl-1,1,4-trioxo-7-(4,4,4-trifluorobutylcarbamoyl)-2,3-dihydro-1lambda6,5-benzothiazepin-3-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C27H31ClF3N3O6S
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