Using CCC(C)(C)Cc1c[nH]c(C(Cc2ccc(-c3cn(C)nc3NC(=O)OC(C)(C)C)cc2)NC(C)=O)n1 to produce CCC(C)(C)Cc1c[nH]c(C(Cc2ccc(-c3cn(C)nc3N)cc2)NC(C)=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.