Using CCOC(=O)c1cccc(NC(=O)N2CCc3c(cnc4[nH]ncc34)C2)c1 to produce O=C(O)c1cccc(NC(=O)N2CCc3c(cnc4[nH]ncc34)C2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.