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 2-[[N-[2-(2,3-dihydro-1-benzofuran-5-yl)ethyl]-N'-methylcarbamimidoyl]amino]-N-phenylacetamide;hydroiodide .
user
C20H25IN4O2
assistant