Using CC(C)CBr, COc1c(OC(F)F)ccc(-c2ccc3c(c2)COC3=O)c1O to produce COc1c(OC(F)F)ccc(-c2ccc3c(c2)COC3=O)c1OCC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.