Using CCCCCCCCC(O)/C=C/c1cccc(C(=O)NCCCC(=O)OCC)n1 to produce CCCCCCCCC(O)/C=C/c1cccc(C(=O)NCCCC(=O)O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.