You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl 4-[[4-(hydroxymethyl)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-8-yl]methyl]pyridine-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C27H27NO7
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