You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6-[4-[(benzyl-methylidene-oxo-lambda6-sulfanyl)amino]-2,3-difluorophenyl]-N-[(3S)-piperidin-3-yl]quinazolin-2-amine into its molecular formula.
user
C27H27F2N5OS
assistant