Using CN(Cc1cn(S(=O)(=O)c2ccc(C3OCCO3)o2)c(-c2cccnc2F)c1F)C(=O)OC(C)(C)C to produce CN(Cc1cn(S(=O)(=O)c2ccc(C=O)o2)c(-c2cccnc2F)c1F)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.