Using COC(=O)c1ccc(C(=O)NCCN(C(=O)OC(C)(C)C)C(N)=NC(=O)OC(C)(C)C)s1 to produce CC(C)(C)OC(=O)N=C(N)N(CCNC(=O)c1ccc(C(=O)O)s1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.