You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(S)-(4-chlorophenyl)-phenylmethyl]-2-(4-oxo-1,2,3-benzotriazin-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H17ClN4O2
assistant