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 tert-butyl N-[2-[[N-ethyl-N'-(2-hydroxy-2-thiophen-2-ylpropyl)carbamimidoyl]amino]ethyl]-N-methylcarbamate .
user
C18H32N4O3S
assistant