You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-[[2-[[2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]acetyl]amino]-4-methylsulfanylbutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H33N9O5S
assistant