Using CCOC(=O)CN=[N+]=[N-], CCOC(=O)N1CCc2cc(C=O)sc2CC1 to produce CCOC(=O)C(=Cc1cc2c(s1)CCN(C(=O)OCC)CC2)N=[N+]=[N-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.