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What is the molecular formula of the molecule (3R,11S,11aS)-2-acetyl-3-benzoyl-11-(7-methoxy-1,3-benzodioxol-5-yl)-3,4,11,11a-tetrahydro-1H-pyrazino[1,2-b][2,6]naphthyridin-6-one ?
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C28H25N3O6
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