Using CCCCCCCCc1ccc(NC(=O)C2=C(CCC(=O)OCC)N3CCCN=C3S2)cc1 to produce CCCCCCCCc1ccc(NC(=O)C2=C(CCC(=O)O)N3CCCN=C3S2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.