You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5S,6R,6aR)-6-butoxy-2,2-dimethyl-N-[6-methyl-2,4-bis(methylsulfanyl)pyridin-3-yl]-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxole-5-carboxamide into molecular formula.
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C20H30N2O5S2
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