Using CCCCOC(OCCCC)[C@H](CCCNC(=N)N)NC(=O)[C@@H]1CCCN1C(=O)[C@@H]1CCC(=O)N1C(=O)OCc1ccccc1 to produce N=C(N)NCCC[C@@H](C=O)NC(=O)[C@@H]1CCCN1C(=O)[C@@H]1CCC(=O)N1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.