Using CC(=O)N1Cc2cc(NC(=O)c3cccnc3NCc3ccc4cc[nH]c4n3)ccc2C(C)(C)C1 to produce CC1(C)CNCc2cc(NC(=O)c3cccnc3NCc3ccc4cc[nH]c4n3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.