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 butyl 4-(4-butyl-6-chloro-2-oxo-8,10-dihydropyrano[2,3-f][1,3]benzoxazin-9-yl)benzoate into molecular formula.
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C26H28ClNO5
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