Using COC(=O)c1ccc(-c2cnn3cc(-c4cnn(C)c4)cnc23)cc1 to produce Cn1cc(-c2cnc3c(-c4ccc(C(=O)O)cc4)cnn3c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.