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 (5R)-3-[(4-chlorophenyl)methyl]-5-[(3,4,5-trimethoxyphenyl)methyl]-1,3-thiazolidine-2,4-dione .
user
C20H20ClNO5S
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