You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(4-tert-butyl-1,3-thiazol-2-yl)ethyl]-2-methyl-3-[1-(oxolan-3-yloxy)propan-2-yl]guanidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H32N4O2S
assistant