You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-amino-N-[(2S)-1-[(4-carbamimidoylphenyl)methylamino]-1-oxopropan-2-yl]-4-(2,3-dimethylphenyl)butanamide .
user
C23H31N5O2
assistant