Translate the following English sentence to French:
"By that I mean that Euro 11 is an informal setting, and Ecofin is the formal setting. The function of the first category of meetings is purely to coordinate the countries that have joined Economic and Monetary Union and which are part of the single currency."
Les premières réunions n'ont qu'une fonction de coordination des pays qui font partie de l'Union économique et monétaire et qui participent à la monnaie unique.