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 1-butyl-2-[(4,5-dimethyl-1,2,4-triazol-3-yl)methyl]-3-(2-phenylsulfanylpropyl)guanidine;hydroiodide .
user
C19H31IN6S
assistant