Using COC(=O)C(=O)c1ccc(Br)c2ccccc12, Nc1ccnc(N2CCOCC2)n1 to produce COC(=O)C(=O)c1ccc(Nc2ccnc(N3CCOCC3)n2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.