Using CC(C)(C)c1nc2c(n1Cc1ccc(Cl)cc1)C(=O)CCC2 to produce CC(C)(C)c1nc2c(n1Cc1ccc(Cl)cc1)C(O)CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.