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system
Name the molecular formula for the molecule established as sodium;(E)-2-(2,1,3-benzothiadiazol-5-yl)-4-(3,4-dimethoxyphenyl)-3-[(4-methoxycarbonylphenyl)methyl]-4-oxobut-2-enoate using the IUPAC nomenclature.
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C27H21N2NaO7S
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