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 7-[3a-(2-cyanoethylamino)-1,3,4,5,6,6a-hexahydrocyclopenta[c]pyrrol-2-yl]-6-cyclopropyl-8-methyl-4-oxo-1H-quinoline-3-carboxylic acid .
user
C24H28N4O3
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