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What is the molecular formula of the molecule identified by 2-[5-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyl-1,3-dioxolan-4-yl]-5-[2-(2,2-dimethyl-1,3-dioxolan-4-yl)ethyl]pyrazine ?
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C21H32N2O6
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