Using COc1ccc2c(Nc3c(Cl)cncc3Cl)cc(=O)n(CCO)c2c1OC1CCCC1 to produce COc1ccc2c(Nc3c(Cl)cncc3Cl)cc(=O)n(CC=O)c2c1OC1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.