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 2-O,2-O'-diethyl 3-O,4-O-dimethyl (3S,4R,5S)-5-(4-bromophenyl)pyrrolidine-2,2,3,4-tetracarboxylate .
user
C20H24BrNO8
assistant