Using CON(C)C(=O)C(CC(=O)OC(C)(C)C)NS(=O)(=O)c1ccc(C(N)=O)cc1OCCc1cccc2ncccc12 to produce CC(C)(C)OC(=O)C[C@@H](C=O)NS(=O)(=O)c1ccc(C(N)=O)cc1OCCc1cccc2ncccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.