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-[[2-(4-chlorophenyl)-4-oxo-4-phenylbutanoyl]amino]-2-thiophen-3-ylethyl]boronic acid is given. What is its corresponding molecular formula?
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C22H21BClNO4S
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