You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[bis(prop-2-enyl)amino]-3-methylbutyl]-3-[[5-fluoro-2-(methylsulfonylmethyl)phenyl]methyl]-2-methylguanidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H35FN4O2S
assistant