Using CCOC(=O)CC(=O)O, CCC=CCC=CCC=CCCCCCCCCOc1ccc(C(=O)n2ccnc2)s1 to produce CCC=CCC=CCC=CCCCCCCCCOc1ccc(C(=O)CC(=O)OCC)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.