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 N-[2-[[2-[1-(3-fluoro-4-methoxyphenyl)ethylamino]-2-oxoethyl]amino]-2-oxoethyl]furan-2-carboxamide .
user
C18H20FN3O5
assistant