Using CC(C)(C)n1cc(C(=O)O)c(=O)c2cc(F)c(F)cc21, O=C(NC1CCNC1)C(F)(F)F to produce CC(C)(C)n1cc(C(=O)O)c(=O)c2cc(F)c(N3CCC(NC(=O)C(F)(F)F)C3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.