You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-cyano-2-[3-(furan-2-yl)prop-2-enyl]-3-[2-[(5-methyl-1H-imidazol-4-yl)methylsulfanyl]ethyl]guanidine is given. What is its corresponding molecular formula?
user
C16H20N6OS
assistant