Using CC(C)(C)OC(=O)NC1CCN(c2ccc(Cl)nn2)CC1, CO to produce COc1ccc(N2CCC(NC(=O)OC(C)(C)C)CC2)nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.