You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-acetylphenyl)-3-[4-(1,3-thiazol-2-yl)-1,4-diazepan-1-yl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H24N4O2S
assistant