You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1,3-benzodioxol-5-yl)-7-methyl-6,8-dihydro-5H-2,7-naphthyridine-4-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H16N2O4
assistant