You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-(3-fluoro-N-methylsulfonylanilino)-N-methyl-N-[(3-thiophen-2-yl-1,2,4-oxadiazol-5-yl)methyl]propanamide .
user
C18H19FN4O4S2
assistant