Using c1cc2c3c(c[nH]c3c1)C[C@H]1NCCO[C@H]21 to produce CCCCN1CCO[C@@H]2c3cccc4[nH]cc(c34)C[C@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.