Using CCCCc1cn(Cc2ccc(-c3ccccc3C(=O)OC)cc2)c2c(Br)cccc2c1=O to produce CCCCc1cn(Cc2ccc(-c3ccccc3C(=O)O)cc2)c2c(Br)cccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.