You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-(2,6-dimethylphenyl)-2-[methyl-[2-(2-methyl-3,4-dihydro-2H-1,5-benzothiazepin-5-yl)-2-oxoethyl]amino]acetamide .
user
C23H29N3O2S
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