Using COc1ccc(-c2c(-c3nc(/C=C/C(=O)NCC4CCOCC4)cs3)cnn2C(C)(C)C)cc1 to produce COc1ccc(-c2c(-c3nc(CCC(=O)NCC4CCOCC4)cs3)cnn2C(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.