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 N-cyclopropyl-N-[(4-methylphenyl)methyl]-2-(2-pyridin-2-yl-1,3-thiazol-4-yl)acetamide using the IUPAC nomenclature.
user
C21H21N3OS
assistant