Using CCOC(=O)CBr, O=C1C(Cc2ccncc2)c2ccccc2N1N1CCOCC1 to produce CCOC(=O)CC1(Cc2ccncc2)C(=O)N(N2CCOCC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.