You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2,4-difluorophenyl)methyl-[[(5S)-3-(4-methoxyphenyl)-4,5-dihydro-1,2-oxazol-5-yl]methyl]azanium ?
user
C18H19F2N2O2+
assistant