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system
Name the molecular formula for the molecule established as [(2R)-2-methylpiperazin-1-yl]-[2-methyl-4-(trifluoromethyl)-5,6,7,8-tetrahydroquinazolin-6-yl]methanone;dihydrochloride using the IUPAC nomenclature.
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C16H23Cl2F3N4O
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