You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-1-[(2-methylphenyl)methyl]-3-[(2-piperidin-1-ylsulfonylphenyl)methyl]guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H30N4O2S
assistant