Using CC(C)(C)OC(=O)N1C2CCC1CC(NC(=O)CCCc1c[nH]nn1)C2 to produce O=C(CCCc1c[nH]nn1)NC1CC2CCC(C1)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.