Using CCOC(=O)c1cnc(Nc2ccc(OCC)c(OCC)c2)[nH]c1=O to produce CCOc1ccc(Nc2ncc(C(=O)O)c(=O)[nH]2)cc1OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.