You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-ethyl-2-[[1-(2-phenylethyl)pyrrolidin-3-yl]methyl]-3-(1-phenylpyrrolidin-3-yl)guanidine;hydroiodide into its molecular formula.
user
C26H38IN5
assistant