Using COc1ccc2c(C(O)c3ccc(CCCN4CCCCC4)cc3)c(C3CCCCC3)sc2c1 to produce COc1ccc2c(C(=O)c3ccc(CCCN4CCCCC4)cc3)c(C3CCCCC3)sc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.