Using COC(=O)CC/C(C)=C/Cc1c(NC(=O)N(C)C)c2c(c(C)c1OC)COC2=O to produce COc1c(C)c2c(c(NC(=O)N(C)C)c1C/C=C(\C)CCC(=O)O)C(=O)OC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.