Using COC(=O)c1cc(C)cc2[nH]c(-c3c(F)c(F)c(-c4ccc(CO)cc4)c(F)c3F)nc12 to produce COC(=O)c1cc(C)cc2[nH]c(-c3c(F)c(F)c(-c4ccc(C=O)cc4)c(F)c3F)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.