You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule ethyl 7-[(E)-2-(dimethylamino)ethenyl]-2-ethyl-3-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate ?
user
C22H26N4O3
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