You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3,5-dichlorophenyl)-5-(4-methyl-4-piperidin-1-ylpiperidin-1-yl)-1,3,4-thiadiazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H24Cl2N4S
assistant