You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (2R,4R)-2-[2-(2-hydroxyethoxy)ethoxy]-N-(4-hydroxyphenyl)-4-(4-oxochromen-3-yl)-3,4-dihydro-2H-pyran-6-carboxamide ?
user
C25H25NO8
assistant