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 (3aR,6R,6aR)-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-3a-(phenylmethoxymethyl)-6,6a-dihydrofuro[3,4-d][1,3]dioxol-4-one into molecular formula.
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C20H26O7
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