Using C=CCN1C[C@H](C)N([C@@H](c2cccc(O)c2)c2cccc(C(=O)N3CCC(=CC(=O)OCC)CC3)c2)C[C@H]1C to produce C=CCN1C[C@H](C)N([C@@H](c2cccc(O)c2)c2cccc(C(=O)N3CCC(=CC(=O)O)CC3)c2)C[C@H]1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.