You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(3-chloro-4-imidazol-1-ylphenyl)-3-[7-[(1R)-1-methoxyethyl]-2-methyl-[1,3]thiazolo[5,4-b]pyridin-6-yl]urea into its molecular formula.
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C20H19ClN6O2S
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