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 ethyl 4-amino-2-[[2-(2,4-dimethoxyphenyl)acetyl]oxymethyl]-6-methylfuro[2,3-d]pyrimidine-5-carboxylate .
user
C21H23N3O7
assistant