You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-[(Z)-[4-(3-bromophenyl)-2-oxo-1H-indol-3-ylidene]methyl]-N-[2-(diethylamino)ethyl]-4-methyl-1H-pyrrole-3-carboxamide into its molecular formula.
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C27H29BrN4O2
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