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 4-(cyclopropylmethoxymethyl)-2-ethyl-6-(pyridin-4-ylmethyl)-5,7-dihydro-4H-pyrazolo[3,4-c]pyridine .
user
C19H26N4O
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