Using COc1c(C(C)C)cc(C(=O)c2c(Cc3ccc4ccccc4c3)oc(C)c2C)cc1C(C)C to produce Cc1oc(Cc2ccc3ccccc3c2)c(C(=O)c2cc(C(C)C)c(O)c(C(C)C)c2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.