Using CCCCCOc1ccc(Cn2c(C)nc(Cl)c2C=O)c(Cl)c1 to produce CCCCCOc1ccc(Cn2c(C)nc(Cl)c2CO)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.