Using CC(C)(C)OC(=O)NCCC[C@@H]1NC(=O)[C@@H](NC(=O)OC(C)(C)C)Cc2cc(ccc2O)-c2ccc(O)c(c2)C[C@@H](C(=O)N[C@@H](CCCNC(=N)N)C(=O)NCCN)NC1=O to produce N=C(N)NCCC[C@H](NC(=O)[C@@H]1Cc2cc(ccc2O)-c2ccc(O)c(c2)C[C@H](N)C(=O)N[C@@H](CCCN)C(=O)N1)C(=O)NCCN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.