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 2-[2-(4-ethoxyanilino)-2-oxoethyl]-4-[2-(1H-indol-3-yl)ethyl]-3-oxo-4a,5,7,7a-tetrahydropyrrolo[3,4-b][1,4]oxazine-6-carboxylate is given. What is its corresponding molecular formula?
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C31H38N4O6
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