Using COC(=O)c1nccc(Sc2cnc(Nc3nccc4sccc34)s2)c1F to produce O=C(O)c1nccc(Sc2cnc(Nc3nccc4sccc34)s2)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.