You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-chloro-2,6-diethylphenyl)-2-(3,7-dimethyl-2,6-dioxopurin-1-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22ClN5O3
assistant