You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2'-amino-2-[(4-bromophenyl)methyl]-6-(5-chloropyridin-3-yl)-2,3'-dimethylspiro[1,3-dihydronaphthalene-4,5'-imidazole]-4'-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H24BrClN4O
assistant