Using O=C1NC(=O)C(c2c[nH]c3ccccc23)=C1c1cc2c3c(c1)CCN3CCC2 to produce O=C1NC(=O)C(c2c[nH]c3ccccc23)=C1c1cc2c3c(ccn3CCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.