You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-[3-(dimethylsulfamoyl)phenyl]-2-[2-(trifluoromethyl)quinazolin-4-yl]sulfanylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H19F3N4O3S2
assistant