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 [2-(2-methyl-3,4-dihydro-2H-1,5-benzothiazepin-5-yl)-2-oxoethyl] 4-amino-3,5,6-trichloropyridine-2-carboxylate .
user
C18H16Cl3N3O3S
assistant