Using COCC(=O)Cl, COC(=O)c1cc(N)c(Cl)c(N)c1 to produce COCC(=O)Nc1cc(C(=O)OC)cc(NC(=O)COC)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.