You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(2-chloro-5-fluorophenyl)-2-[4-oxo-3-(2-thiophen-2-ylethyl)quinazolin-2-yl]sulfanylacetamide into molecular formula.
user
C22H17ClFN3O2S2
assistant