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 N-[(2R,4aR,6R,7R,8R,8aS)-6-[(2R)-2,3-dihydroxypropoxy]-8-hydroxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]acetamide is given. What is its corresponding molecular formula?
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C18H25NO8
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