You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[5-(4-bromophenyl)-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanylmethyl]pyridine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H15BrN4S
assistant