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 2-[3-[(4-aminosulfanylphenyl)methyl]-8-(2-chlorophenyl)-7-(4-chlorophenyl)-2,6-dioxopurin-1-yl]acetamide is given. What is its corresponding molecular formula?
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C26H20Cl2N6O3S
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