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-[1-(4-ethylphenyl)-2-hydroxyethyl]-3-[(4-propan-2-yl-1,3-thiazol-2-yl)methyl]urea .
user
C18H25N3O2S
assistant