You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S)-N-(3-ethylphenyl)-1-[3-(4-fluorophenyl)-[1,2]oxazolo[5,4-d]pyrimidin-4-yl]piperidine-3-carboxamide into its molecular formula.
user