You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-fluorophenyl)-1-[(2S)-2-methyl-1-[[3-[(2-methylpropan-2-yl)oxy]pyrazin-2-yl]methyl]piperidin-4-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H30FN3O2
assistant