You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[3-[5-ethyl-6-(methylcarbamoyl)cyclohepta-1,3,6-trien-1-yl]oxyphenyl]-2,3-dihydroindole-1-carboxamide into its molecular formula.
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C26H27N3O3
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