Using CCOC(=O)C(Cc1cc(Br)c(OC)c(CNC(=O)OC(C)(C)C)c1)OC(C)C, [C-]#N to produce CCOC(=O)C(Cc1cc(C#N)c(OC)c(CNC(=O)OC(C)(C)C)c1)OC(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.