Using COc1ccc(C(O)=C2C(=O)N(C(C)=O)c3ccc(C(C)=O)cc32)cc1OC, C[O+](C)C to produce COC(=C1C(=O)N(C(C)=O)c2ccc(C(C)=O)cc21)c1ccc(OC)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.