You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(2,3-dihydro-1H-inden-2-ylamino)-1-ethyl-3-[2-(1-methylpyrazol-4-yl)ethynyl]-1,8-naphthyridin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H23N5O
assistant