You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-1,3-diamino-1-[4-[4-chloro-2-(2-chlorobenzoyl)phenyl]-5-methyl-1,2,4-triazol-3-yl]-4-phenylbutan-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H23Cl2N5O2
assistant