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-[(1S)-1-(4-methyl-1,3-thiazol-2-yl)propyl]-3-[(2R)-1-thiophen-3-ylpropan-2-yl]urea using the IUPAC nomenclature.
user
C15H21N3OS2
assistant