You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[4-[(2R)-butan-2-yl]phenoxy]-N-[(Z)-(2,3-dimethoxyphenyl)methylideneamino]acetamide using the IUPAC nomenclature.
user
C21H26N2O4
assistant