You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E)-6-chloro-4-methyl-2-(quinolin-4-ylmethylidene)-3H-[1,3]thiazolo[4,5-b]pyridin-4-ium is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H13ClN3S+
assistant