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 [(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-[4-[[2-(4-tert-butylphenoxy)acetyl]amino]-2-oxopyrimidin-1-yl]oxolan-3-yl] (4-nitrophenyl) carbonate using the IUPAC nomenclature.
user
C49H48N4O12
assistant