Using C1COCCN1, CC(C)(C)OC(=O)n1cc2c(n1)NC(CBr)=C(C#N)C2c1ccccc1Cl to produce CC(C)(C)OC(=O)n1cc2c(n1)NC(CN1CCOCC1)=C(C#N)C2c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.