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 N-[3-(2-amino-2-oxoethyl)-1-(4-methylsulfonylphenyl)benzo[g]indazol-8-yl]-2,3-dichlorobenzamide is given. What is its corresponding molecular formula?
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C27H20Cl2N4O4S
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