You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 6-[[5-(3-amino-6-chloropyrazin-2-yl)-1,2,4-oxadiazol-3-yl]amino]-3H-1,3-benzoxazol-2-one is given. What is its corresponding molecular formula?
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C13H8ClN7O3
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