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system
Name the molecular formula for the molecule established as (4S)-4-(2,4-dimethoxy-3-methylphenyl)-8,9-diethoxy-5,6-dihydro-4H-pyrrolo[1,2-a][1,4]benzodiazepin-5-ium using the IUPAC nomenclature.
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C25H31N2O4+
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