You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S)-5-fluoro-3-[[3-methyl-2-[[(E)-2-(methylamino)ethenyl]amino]butanoyl]amino]-4-oxopentanoic acid into its molecular formula.
user
C13H22FN3O4
assistant