You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2S)-5-[(7-bromo-4-oxopyrido[1,2-a]pyrimidin-2-yl)methylsulfanyl]-2-phenyl-2H-imidazo[1,2-c]quinazolin-3-one into molecular formula.
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C25H16BrN5O2S
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