You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name methyl (3R,3aS,8bS)-1-methyl-2,3,3a,8b-tetrahydro-[1]benzofuro[3,2-b]pyrrole-3-carboxylate into its molecular formula.
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C13H15NO3
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