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 ethyl 4-(4-hydroxy-6-methyl-2-oxopyran-3-yl)-1-(4-methoxyphenyl)-2-methyl-5-phenylpyrrole-3-carboxylate into molecular formula.
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C27H25NO6
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