Using C=Cc1cc2c(nc1OC)CCN(C(=O)C(F)(F)F)CC2C to produce CCc1cc2c(nc1OC)CCN(C(=O)C(F)(F)F)CC2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.