You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 5-[[3-[(S)-[[(3R)-1-azabicyclo[2.2.2]octan-3-yl]oxycarbonylamino]-phenylmethyl]phenoxy]methyl]pyrazine-2-carboxylic acid into its molecular formula.
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C27H28N4O5
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