Using O=C([O-])[O-], COc1ccc(-c2nsc3ccc(-n4c(=O)cc(C(F)(F)F)[nH]c4=O)cc23)cc1C to produce COc1ccc(-c2nsc3ccc(-n4c(=O)cc(C(F)(F)F)n(C)c4=O)cc23)cc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.