You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3S,3aS,6aR)-2-(4,6-difluoro-1H-indole-2-carbonyl)-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-3-carboxylic acid .
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C17H16F2N2O3
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