You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3-fluoro-4-morpholin-4-ylphenyl)methyl]-1-[(8S)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-8-yl]methanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H25FN4O
assistant