Using CCCCCCCCCCC(=O)CCCCCNc1ccc(C(=O)OCC)cc1, NO to produce CCCCCCCCCCC(CCCCCNc1ccc(C(=O)OCC)cc1)=NO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.