You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[(3R)-2-oxo-3,4-dihydro-1H-quinolin-3-yl]-N-(4-propan-2-yl-1,3-thiazol-2-yl)propanamide by IUPAC nomenclature, provide its molecular formula.
user
C18H21N3O2S
assistant