Using O=C(N1CCc2ccc3c(c2CC1)C(c1nccs1)=CC3)C(F)(F)F to produce O=C(N1CCc2ccc3c(c2CC1)C(c1nccs1)CC3)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.