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