Using COC(=O)CNNC(=O)N1CCN(Cc2ccc(Cl)cc2)CC1 to produce O=C([O-])CNNC(=O)N1CCN(Cc2ccc(Cl)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.