Using CCOC(=O)CCC(N)CC(=O)OCC, NN=Cc1ccc(NC(=O)CCC(=O)O)cc1 to produce CCOC(=O)CCC(CC(=O)OCC)NC(=O)CCC(=O)Nc1ccc(C=NN)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.