Using CN1Cc2cc(Br)cnc2NCCC1=O, C=CC(=O)OC(C)(C)C to produce CN1Cc2cc(/C=C/C(=O)OC(C)(C)C)cnc2NCCC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.