You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (2S,3aS)-2-[2-[(S)-(4-methylphenyl)sulfinyl]phenyl]-5-oxo-3a-phenyl-3,4-dihydro-1H-pentalene-2-carbonitrile using the IUPAC nomenclature.
user
C28H23NO2S
assistant