Using COC1CCN(Cc2cc(Cl)c(F)c(CNC(=O)OC(C)(C)C)c2)CC1 to produce COC1CCN(Cc2cc(Cl)c(F)c(CN)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.