Using c1ccncc1, Cc1c(F)c(F)c(O)c2c(=O)c(C(=O)O)cn(-c3cc(N)c(F)cc3F)c12 to produce CNc1c(F)c(O)c2c(=O)c(C(=O)O)cn(-c3cc(N)c(F)cc3F)c2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.