Using COC(=O)CN1Cc2ccccc2NC1=O, CC(C)(C)OC(=O)CBr to produce COC(=O)CN1Cc2ccccc2N(CC(=O)O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.