Using C1CCOC1, C=C(C(=O)O)c1cccc(-c2cc3c(cc2OCOC)C(C)(C)CCC3(C)C)c1 to produce C=C(C(=O)OC)c1cccc(-c2cc3c(cc2O)C(C)(C)CCC3(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.