Using COc1ncccc1CN1CCC(CCc2ccccc2NCc2ccccc2)CC1 to produce O=c1[nH]cccc1CN1CCC(CCc2ccccc2NCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.