You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-[N'-[2-(dimethylamino)-2-oxoethyl]-N-propylcarbamimidoyl]piperazine-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H29N5O3
assistant