You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[[4-benzyl-5-(5-bromofuran-2-yl)-1,2,4-triazol-3-yl]sulfanylmethyl]-1,3,5-triazine-2,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H15BrN8OS
assistant