Using C1COCCN1, COC1=C(OC)C(=O)C(Cc2ccc(C(=O)O)c(-c3ccccc3)c2)=C(C)C1=O to produce COC1=C(OC)C(=O)C(Cc2ccc(C(=O)N3CCOCC3)c(-c3ccccc3)c2)=C(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.