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What is the molecular formula of the molecule 4-[(2-chloro-6-ethylphenyl)diazenyl]-N-[4-[4-[[4-[(2-chloro-6-ethylphenyl)diazenyl]-3-hydroxynaphthalene-2-carbonyl]amino]phenyl]phenyl]-3-hydroxynaphthalene-2-carboxamide ?
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C50H38Cl2N6O4
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