Using CCOC(=O)c1ccc2c(c1)nc(Nc1c(F)cccc1F)n2C to produce Cn1c(Nc2c(F)cccc2F)nc2cc(C(=O)O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.