Using C1CC2CNC1CN2, CCn1cc(C(=O)O)c(=O)c2cc(F)c(F)cc21 to produce CCn1cc(C(=O)O)c(=O)c2cc(F)c(N3CC4CCC3CN4)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.