Using CC(C)(C)OC(=O)N1CCN(CCCN)C(=O)C1, O=C(O)C1=Cc2cnc3cccc(n23)S1 to produce CC(C)(C)OC(=O)N1CCN(CCCNC(=O)C2=Cc3cnc4cccc(n34)S2)C(=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.