Using COC(=O)CBr, Cc1ccc2[nH]c(C)c(Sc3ccc(Cl)cc3)c2c1C#N to produce COC(=O)Cn1c(C)c(Sc2ccc(Cl)cc2)c2c(C#N)c(C)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.