You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[5-(quinolin-2-ylmethyl)-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-2-yl]propan-1-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22N4O
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