You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (4S)-7-[5-[(4-fluorophenyl)methyl]-1,3,4-thiadiazol-2-yl]-9-hydroxy-4-[(1R)-1-methoxyethyl]-2-propan-2-yl-3,4-dihydropyrido[1,2-a]pyrazine-1,8-dione into molecular formula.
user
C23H25FN4O4S
assistant