Using COc1cc(O)c2c(c1)OC(C)(C)CC2, COC(=O)C#CC(=O)OC to produce COc1cc2c(c3oc(C(=O)O)cc(=O)c13)CCC(C)(C)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.