Using CN1CC=C(c2c[nH]c3ccc(C=C4NC(=O)NC4=O)cc23)CC1 to produce CN1CCC(c2c[nH]c3ccc(CC4NC(=O)NC4=O)cc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.