You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-4-[2-(2,2-difluoroethoxy)ethyl-[4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)butyl]amino]-2-[(5-phenylpyridin-2-yl)methyl]butanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H40F2N4O3
assistant