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 4-[(2-amino-3-sulfanylpropyl)amino]-N-(1-hydroxy-4-methylsulfanylbutan-2-yl)-2-phenylbenzamide .
user
C21H29N3O2S2
assistant