Using COc1ccc([C@H](CC(=O)O)N(C)C(=O)CCCCc2nc(N)cc3ccccc23)cn1 to produce COc1ccc([C@H](CC(=O)O)N(C)C(=O)CCCCc2nc(N)cc3c2CCCC3)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.