You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-[[3-(3-chloro-4-fluorophenyl)-4-imidazo[1,2-b]pyridazin-6-ylpyrazol-1-yl]methoxy]ethyl-trimethylsilane is given. What is its corresponding molecular formula?
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C21H23ClFN5OSi
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