You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7S)-2-amino-4-[4-methoxy-3-(1,2,4-triazol-1-ylmethyl)phenyl]-7-methyl-5,7-dihydrofuro[3,4-b]pyridine-3-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H18N6O2
assistant