You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[(1S)-1-[4-amino-3-[2-(methoxymethyl)-1,3-thiazol-5-yl]pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-7-fluoro-3-(3-fluorophenyl)pyrido[1,2-a]pyrimidin-4-one into molecular formula.
user
C26H20F2N8O2S
assistant