Using CCOC(=O)c1cn(-c2nc(N)c(F)cc2F)c2c(F)c(F)c(F)c(NCc3ccccc3)c2c1=O to produce CCOC(=O)c1cn(-c2nc(N)c(F)cc2F)c2c(F)c(F)c(F)c(N)c2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.