You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(3-ethylsulfonyl-1H-pyridin-2-ylidene)-6-methyl-4-methylidene-1H-[1,3]thiazolo[5,4-b]pyridine-3,4-diium into its molecular formula.
user
C15H17N3O2S2+2
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