Using COC(=O)COCP(=O)(OC)OC, CC[C@@]1(C=O)CCCN(CCc2c[nH]c3ccc(OC)cc23)C1=O to produce CC[C@@]1(C=C(OC)C(=O)OC)CCCN(CCc2c[nH]c3ccc(OC)cc23)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.