You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(5-amino-1,3,4-thiadiazol-2-yl)sulfanyl]-1-[3-(4-chlorophenyl)-7-[(4-chlorophenyl)methylidene]-3a,4,5,6-tetrahydro-3H-indazol-2-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H21Cl2N5OS2
assistant