You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-ethyl-3-[1-(5-methylthiophen-2-yl)propan-2-yl]-2-[(2-phenyloxolan-3-yl)methyl]guanidine .
user
C22H31N3OS
assistant