You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 6-(3-nitrophenyl)-3-(pyridin-2-ylmethylsulfanyl)-[1,2,4]triazolo[4,3-b]pyridazine by IUPAC nomenclature, provide its molecular formula.
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C17H12N6O2S
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