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-[(4R,7R)-4-(4-hydroxyphenyl)-3-methyl-5-oxo-7-thiophen-2-yl-6,7,8,9-tetrahydro-4H-pyrazolo[3,4-b]quinolin-1-yl]benzoic acid is given. What is its corresponding molecular formula?
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C28H23N3O4S
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