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 4-[(3S,3aS,6aR)-5-(2,4-dimethylphenyl)-4,6-dioxo-2-phenyl-3a,6a-dihydro-3H-pyrrolo[3,4-d][1,2]oxazol-3-yl]benzonitrile ?
user
C26H21N3O3
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