Using CCCCn1c2c(s/c1=N\C(=O)c1cc(Cl)ccc1OC)C(=O)COC2 to produce CCCCn1c2c(s/c1=N\C(=O)c1cc(Cl)ccc1OC)C(O)COC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.