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What is the molecular formula of the molecule identified by (1R,3aR,6aR)-5-(3-chloro-4-methylphenyl)-1-(3-methylphenyl)spiro[3a,6a-dihydro-1H-furo[3,4-c]pyrrole-3,2'-indene]-1',3',4,6-tetrone ?
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C28H20ClNO5
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