You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-chloro-N-[(3R,4S)-1-methyl-3-[[4-(2-oxopyridin-1-yl)benzoyl]amino]piperidin-4-yl]-1H-indole-6-carboxamide into molecular formula.
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C27H26ClN5O3
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