You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule tert-butyl N-[4-[[N-ethyl-N'-[(4-propan-2-yl-1,3-thiazol-2-yl)methyl]carbamimidoyl]amino]butan-2-yl]-N-methylcarbamate .
user
C20H37N5O2S
assistant