You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl 4-[(E)-[2-oxo-2-(1,2,3,4-tetrahydronaphthalen-1-ylamino)ethoxy]iminomethyl]benzoate .
user
C21H22N2O4
assistant