You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named tert-butyl N-[2-(1-hydroxy-2,2-diphenylethyl)-6-methyl-5,7-dioxo-4a,7a-dihydro-2H-pyrrolo[3,4-b]pyridin-1-yl]carbamate is given. What is its corresponding molecular formula?
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C27H31N3O5
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