You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-ethyl-4-(2-hydroxyphenyl)-N'-[(6-methoxypyridin-2-yl)methyl]piperazine-1-carboximidamide;hydroiodide ?
user
C20H28IN5O2
assistant