Using O=C1c2ccccc2C(=O)N1CCCc1csc(S)n1, CC(C)(C)OC(=O)C(C)(C)Br to produce CC(C)(C)OC(=O)C(C)(C)Sc1nc(CCCN2C(=O)c3ccccc3C2=O)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.