You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-[(1-ethylbenzimidazol-2-yl)sulfanylmethyl]-3-pyridin-3-yl-5,6-dihydro-[1,3]thiazolo[2,3-c][1,2,4]triazole into molecular formula.
user
C19H18N6S2
assistant