You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-1-[2-(4-methylpiperidin-1-yl)-2-thiophen-2-ylethyl]-3-[2-(2-methyl-1,3-thiazol-4-yl)ethyl]guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H31N5S2
assistant