Using OC12CC3CC(CC(C3)C1)C2, COC(=O)c1ccc(O)c(OC)c1 to produce COC(=O)c1cc(OC)c(O)c(C23CC4CC(CC(C4)C2)C3)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.