Using CCC(=O)Nc1cc(N)ccc1O, CC(=O)c1c(O)oc(=O)c(C(C)=O)c1O to produce CCC(=O)Nc1cc(NC(C)=C2C(=O)OC(=O)C(C(C)=O)=C2O)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.