Using CC(CO)CCC(C)(C)C, Cc1cc(CCl)c(O)c(-n2nc3ccccc3n2)c1 to produce Cc1cc(COCC(C)CCC(C)(C)C)c(O)c(-n2nc3ccccc3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.