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甲酸甲酯107-31-3 Methyl formate甲酸乙酯109-94-4 Ethyl formate乙酸甲酯79-20-9 Methyl acetate乙酸乙酯141-78-6 Ethyl acetate乙酸正丙酯109-60-4 Propyl acetate乙酸丁酯123-86-4 Butyl acetate乙酸戊酯628-63-7 Banana oil1,4-丁内酯96-48-0 1,4-Butyrolactone