You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3R)-N-[3-(4-ethylphenyl)-5-methyl-1,3-thiazol-2-ylidene]-3-fluoropyrrolidine-1-carboxamide into its molecular formula.
user
C17H20FN3OS
assistant