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 1-(3,4-dihydro-2H-chromen-4-yl)-2-(2-phenyl-2-pyrrolidin-1-ylethyl)guanidine;hydroiodide ?
user
C22H29IN4O
assistant