Using CCOC(=O)C(C(=O)OCC)c1ccc2ncn(Cc3ccc(OC)cc3)c(=O)c2c1 to produce COC(=O)Cc1ccc2ncn(Cc3ccc(OC)cc3)c(=O)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.