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 2-[(6S)-5-oxo-4,6-dihydroimidazo[1,2-b][1,2,4]triazol-6-yl]-N-phenylacetamide into molecular formula.
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C12H11N5O2
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