Using O=C(O)[C@H]1CC[C@H](O)CC1, CC(C)(C)c1nc(C2CCC2)cc(N2CCN(CC[C@H]3CC[C@H](N)CC3)CC2)n1 to produce CC(C)(C)c1nc(C2CCC2)cc(N2CCN(CC[C@H]3CC[C@H](NC(=O)[C@H]4CC[C@H](O)CC4)CC3)CC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.