You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[[2-[[2-[(2-amino-4-methylpentanoyl)amino]-3-sulfanylpropanoyl]amino]-3-methylpentanoyl]amino]-3-hydroxypropanoic acid .
user
C18H34N4O6S
assistant