You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[3-cyano-4-(triazol-2-yl)phenyl]-3-[7-[(1S)-1-methoxyethyl]-2-methyl-[1,3]thiazolo[5,4-b]pyridin-6-yl]urea is given. What is its corresponding molecular formula?
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C20H18N8O2S
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