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 (3S)-1'-[(2,4-dichlorophenyl)methyl]-3',3'-dimethylspiro[benzo[f][1,4]benzoxazine-3,2'-indole] using the IUPAC nomenclature.
user
C28H22Cl2N2O
assistant