Using Cc1cc(C)c(N2CCCc3c2nn(C)c3NC(=O)OC(C)(C)C)c(C)c1 to produce CNc1c2c(nn1C)N(c1c(C)cc(C)cc1C)CCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.