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 (1S,2R,3R)-1-(carboxymethyl)-5-methoxy-3-(3-methoxyphenyl)-2,3-dihydro-1H-indene-2-carboxylic acid .
user
C20H20O6
assistant