Using O=C1C(Cc2ccncc2)c2ccccc2N1c1ccccc1, CCOC(=O)CCCBr to produce CCOC(=O)CCCC1(Cc2ccncc2)C(=O)N(c2ccccc2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.