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-[4-[4-(4-amino-7,7-dimethylpyrimido[4,5-b][1,4]oxazin-6-yl)phenyl]cyclohexyl]oxyacetic acid into molecular formula.
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C22H26N4O4
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