You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[[(3R,4S,5R)-4,5-dihydroxyoxan-3-yl]methyl]-N-methyl-3-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)propanamide into molecular formula.
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C19H27NO5
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