You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(2-bromophenyl)-3-(piperidin-1-ylmethyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H16BrN5S
assistant