Using CCOC(=O)C1(C)CC1, N=C(NC(=N)N1CCOCC1)NC1CC1 to produce CC1(c2nc(NC3CC3)nc(N3CCOCC3)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.