Using COc1cc2c(cc1OC)CC(=O)N(CCCN(C)C(=O)OC(C)(C)C)C=C2 to produce CNCCCN1C=Cc2cc(OC)c(OC)cc2CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.