Using Nc1cc(CC(c2ccccc2)C2CC2)ccn1, O=C=NC(=O)c1ccccc1 to produce NC(=O)Nc1cc(CC(c2ccccc2)C2CC2)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.