Using O=C(C=Cc1c(-c2ccccc2)nn2ccccc12)N1CCCCC1CO, CI to produce COCC1CCCCN1C(=O)C=Cc1c(-c2ccccc2)nn2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.