You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-[2-cyclopropyl-2-(dimethylamino)ethyl]-2-methyl-3-(1-thiophen-2-ylpiperidin-4-yl)guanidine using the IUPAC nomenclature.
user
C18H31N5S
assistant