You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-[N'-methyl-N-[(2-phenylmethoxypyridin-4-yl)methyl]carbamimidoyl]piperazine-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H29N5O3
assistant