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 2-[2-[[(3R,3aR,6R,6aR)-6-hydroxy-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-3-yl]amino]-2-oxoethoxy]benzamide into molecular formula.
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C15H18N2O6
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