Using CCCCCCCN, O=C(O)CCCCCCCSc1nc(-c2ccccc2)c(-c2ccccc2)[nH]1 to produce CCCCCCCNC(=O)CCCCCCCSc1nc(-c2ccccc2)c(-c2ccccc2)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.