You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[3-[[N-ethyl-N'-[(3-hydroxy-4-methoxyphenyl)methyl]carbamimidoyl]amino]propyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H32N4O4
assistant