You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-chloro-N-(4,5-dihydro-1H-imidazol-2-yl)-2-methyl-6-propoxypyrimidin-5-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H16ClN5O
assistant