You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[3-[(4-fluorophenyl)methyl]-4-oxopyrido[2,3-d]pyrimidin-2-yl]sulfanylacetonitrile using the IUPAC nomenclature.
user
C16H11FN4OS
assistant