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 2-amino-4-[(4S)-2,2-dimethyloxan-4-yl]-6-(1,3-dimethylpyrazol-4-yl)pyridine-3-carbonitrile .
user
C18H23N5O
assistant