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-ethyl-2-[[3-(furan-2-yl)-1H-1,2,4-triazol-5-yl]methyl]-3-[(3-methyl-1-benzofuran-2-yl)methyl]guanidine;hydroiodide .
user
C20H23IN6O2
assistant