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 5-[(3-methylphenyl)methyl]-6-oxo-N-[[(2S)-oxolan-2-yl]methyl]benzo[b][1,4]benzothiazepine-3-carboxamide .
user
C27H26N2O3S
assistant