Using C1COCCO1, Cc1cc(C)c(S(=O)(=O)N(C(=N)NCCC[C@H](N)C(=O)O)C(=O)OC(C)(C)C)c(C)c1 to produce COC(=O)[C@@H](N)CCCNC(=N)NS(=O)(=O)c1c(C)cc(C)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.