You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2S)-1,4-dioxan-2-yl]-N-[[2-[(2-fluorophenyl)methoxy]-7-methylsulfanylquinolin-3-yl]methyl]methanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H25FN2O3S
assistant