Using COC(=O)c1ccccc1Cn1ncc2cnc(Nc3cnn(C)c3)nc21 to produce Cn1cc(Nc2ncc3cnn(Cc4ccccc4C(=O)O)c3n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.