Using COc1c2c(c(OC)c(OC)c1OC)CC(CCCCCCCCN1C(=O)c3ccccc3C1=O)C2 to produce COc1c2c(c(OC)c(OC)c1OC)CC(CCCCCCCCN)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.