You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (3R,3aR,6aR)-3-(2,5-dimethoxyphenyl)-5-(4-fluorophenyl)-2-phenyl-3a,6a-dihydro-3H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione ?
user
C25H21FN2O5
assistant