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 N-[5-[(9-methyl-4-oxopyrido[1,2-a]pyrimidin-2-yl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pentanamide using the IUPAC nomenclature.
user
C17H19N5O2S2
assistant