Using COc1c(Nc2cccc(NC(=O)c3sccc3NCc3ccncc3)c2)c(=O)c1=O to produce Nc1cccc(NC(=O)c2sccc2NCc2ccnc3ccccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.