Using CCOC(=O)c1ccc(N=Nc2ccc3c(c2)C(=O)CCC3(C)C)cc1 to produce CCOC(=O)c1ccc(N=Nc2ccc3c(c2)C(O)CCC3(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.