Using CC(O)C(O)C1CNc2[nH]c(N)nc(=O)c2N1, CC(C)[C@H](NC(=O)OC(C)(C)C)C(=O)O to produce CC(C)C(NC(=O)OC(C)(C)C)C(=O)N1c2c([nH]c(N)nc2=O)NCC1C(O)C(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.