Using CCOC(=O)c1cc(-c2ccc(C)cn2)cc(-c2snnc2C(C)C)c1 to produce Cc1ccc(-c2cc(C(=O)O)cc(-c3snnc3C(C)C)c2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.