You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3aS,7aS)-2-[[3-(4-methylphenyl)-1,2-oxazol-5-yl]methyl]-3a,4,7,7a-tetrahydroisoindole-1,3-dione .
user
C19H18N2O3
assistant