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system
Name the molecular formula for the molecule established as 5-[[[3-carboxy-4-[3-(dimethylamino)-6-methyliminoxanthen-9-yl]benzoyl]amino]methyl]-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid using the IUPAC nomenclature.
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C45H33N3O9
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