You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-(5-chloro-2-methylphenyl)-2-[4-[(4,5-dimethyl-1,3-oxazol-2-yl)methyl]-1,4-diazepan-1-yl]propanamide ?
user
C21H29ClN4O2
assistant