You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1,2-dimethyl-1-[(2-methyl-1,3-thiazol-4-yl)methyl]-3-(naphthalen-1-ylmethyl)guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H23IN4S
assistant