Using O=C(Cl)CCc1ccccc1, C[C@@H](O)c1nc2cnc3ccsc3c2n1[C@H]1CCCNC1 to produce CC(O)c1nc2cnc3ccsc3c2n1[C@H]1CCCN(C(=O)CCc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.