Using CC(=O)OC(C)=O, O=C(CSc1nc2ccccc2s1)N1CCNc2ccccc21 to produce CC(=O)N1CCN(C(=O)CSc2nc3ccccc3s2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.