Using CC(=O)N(CC(=O)O)c1ccccc1, COC(=O)CNc1ccccc1 to produce COC(=O)CN(C(=O)CN(C(C)=O)c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.