Using CCCc1c(Cc2ccc(-c3ccccc3C#N)cc2)c(=O)n(C2CCNCC2)c2ncnn12, CCOC(=O)CBr to produce CCCc1c(Cc2ccc(-c3ccccc3C#N)cc2)c(=O)n(C2CCN(CC(=O)OC)CC2)c2ncnn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.