Using COS(=O)(=O)OC, COc1cc(O)c(C=O)cc1-c1cc2c(cc1C)C(C)(C)CCC2(C)C to produce COc1cc(OC)c(-c2cc3c(cc2C)C(C)(C)CCC3(C)C)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.