Using CCOC(=O)c1nc(-c2ccc3c(c2)CCC3=O)c(-c2ccncc2)[nH]1 to produce O=C(O)c1nc(-c2ccc3c(c2)CCC3=O)c(-c2ccncc2)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.