You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[6-amino-5-cyano-4-(4-ethoxyphenyl)-3-methyl-4H-pyrano[2,3-c]pyrazol-1-yl]benzoic acid .
user
C23H20N4O4
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