Using Cc1ccc(S(=O)(=O)N2CCN(S(=O)(=O)c3ccc(C)cc3)CC3(C2)NC(=O)c2c(Cl)cc(Br)c(=O)n23)cc1 to produce O=C1NC2(CNCCNC2)n2c1c(Cl)cc(Br)c2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.