You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-amino-4,6-dimethyl-5-[[5-(2-nitrophenyl)furan-2-yl]methylidene]cyclopenta[b]pyridine-3,7-dicarbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
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C23H15N5O3
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