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                                    标题
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                                                        3-Ethyl-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one Hydrochloride 
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                                    IUPAC标准名
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                                                        3-ethyl-9-hydroxy-2-methyl-4H,6H,7H,8H,9H-pyrido[1,2-a]pyrimidin-4-one hydrochloride
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                                    IUPAC传统名
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                                                        3-ethyl-9-hydroxy-2-methyl-6H,7H,8H,9H-pyrido[1,2-a]pyrimidin-4-one hydrochloride
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