You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-[4-(4-fluorophenyl)-3,6-dihydro-2H-pyridin-1-yl]propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H22FNO3
assistant