Using CCOC(=O)c1c2n(c3cc(F)c(F)cc3c1=O)C(C)S2, O=C(NC1CCNC1)C(F)(F)F to produce CCOC(=O)c1c2n(c3cc(N4CCC(NC(=O)C(F)(F)F)C4)c(F)cc3c1=O)C(C)S2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.