Using C=C(C(=O)O)c1cc(-c2cc3c(cc2C)C(C)(C)CCC3(C)C)ccc1OCOC, C1CCOC1 to produce C=C(C(=O)OC)c1cc(-c2cc3c(cc2C)C(C)(C)CCC3(C)C)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.