Using O=C([O-])/C=C/c1ccc(O)c(O)c1, O=C(C=Cc1ccccc1)OCC1CO1 to produce O=C(C=Cc1ccc(O)c(O)c1)OCC(O)COC(=O)/C=C/c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.