Using O=C(O)c1nc2ccccc2s1, CC(C)(C)OC(=O)N1CCC2(CC1)CNCCO2 to produce CC(C)(C)OC(=O)N1CCC2(CC1)CN(C(=O)c1nc3ccccc3s1)CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.