Using COC(=O)Cc1c(C)c2ccc(NS(=O)(=O)c3ccc([N+](=O)[O-])cc3C#N)cc2oc1=O to produce Cc1c(CC(=O)O)c(=O)oc2cc(NS(=O)(=O)c3ccc([N+](=O)[O-])cc3C#N)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.