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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A B C D E File G H I J K L M N O P Q R S T U V W X Y Z Comment ce médicament agit-il? Quels sont ses effets?Tadalafil can be synthesized ranging from (D)-tryptophan methyl ester and piperonal by means of a Pictet–Spengler reaction. This is followed by condensations with chloroacetyl chloride an