You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (13R)-13-(2-hydroxy-3-methoxyphenyl)-8-(4-methoxyphenyl)-3,5-dimethyl-12-oxa-3,5,9-triazatricyclo[7.4.0.02,7]trideca-1,7-diene-4,6-dione by IUPAC nomenclature, provide its molecular formula.
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C25H25N3O6
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