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-[(1S)-2,2-dimethylcyclopropyl]-3-[(3-ethyl-5-methyl-1,2-oxazol-4-yl)methyl]urea .
user
C13H21N3O2
assistant