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What is the molecular formula of the molecule 7-[[(3aS,4R,7R)-7-methoxy-6,6-dimethyl-2-oxo-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-4-yl]oxy]-3-amino-8-methylchromen-2-one ?
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C19H21NO8
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