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system
Name the molecular formula for the molecule established as [(4aR,6S,7S,8S,8aR)-7-hydroxy-6-methoxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] benzoate using the IUPAC nomenclature.
user
C21H22O7
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