You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3aR,6aS)-5-(3-chlorophenyl)-3-[[5-methyl-2-(2-methylphenyl)-1,3-oxazol-4-yl]methyl]-3a,6a-dihydropyrrolo[3,4-d]triazole-4,6-dione .
user
C22H18ClN5O3
assistant