Using [N-]=[N+]=NCC(O)c1cccc(C(=O)C(C(=O)c2cc(F)cc(F)c2)=C2Nc3ccccc3N2)c1 to produce NCC(O)c1cccc(C(=O)C(C(=O)c2cc(F)cc(F)c2)=C2Nc3ccccc3N2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.