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 (3S)-3-[4-[[(2R)-2-(2,5-dichlorophenoxy)butanoyl]amino]phenyl]-3-methoxypropanoic acid using the IUPAC nomenclature.
user
C20H21Cl2NO5
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