Using COC(=O)C(C)(C)COc1ccc(-c2ccc3c(C(=O)Nc4ccccc4)cc(C)nc3c2)cn1 to produce Cc1cc(C(=O)Nc2ccccc2)c2ccc(-c3ccc(OCC(C)(C)C(=O)O)nc3)cc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.