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 6-amino-4-[4-[(4-chlorophenyl)methoxy]phenyl]-3-propyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile .
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C23H21ClN4O2
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