You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
prop-2-enyl (3R)-2-[[(5-chloro-1,3-benzoxazol-2-yl)amino]methyl]-3-methylpiperidine-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22ClN3O3
assistant