You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[2-[2-hydroxy-3-(3-imidazol-1-ylprop-1-ynyl)-6-oxopyrazin-1-yl]-1,3-oxazol-4-yl]benzoic acid into its molecular formula.
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C20H13N5O5
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