Using COC(=O)CCCN1CCN(CC(=O)c2ccc(C(=N)N)cc2)C1=O to produce COC(=O)CCCN1CCN(CC(O)c2ccc(C(=N)N)cc2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.