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 N-[1-[4-(cyclopropanecarbonylamino)phenyl]ethyl]-4-methyl-2-thiophen-3-yl-1,3-thiazole-5-carboxamide .
user
C21H21N3O2S2
assistant