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 4-(6-butyl-3-phenyl-[1,2]oxazolo[5,4-d]pyrimidin-4-yl)-N-(4-nitrophenyl)-1,4-diazepane-1-carboxamide into molecular formula.
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C27H29N7O4
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