Using O=Cc1cn(C(c2ccccc2)(c2ccccc2)c2ccccc2)c(F)n1 to produce OCc1cn(C(c2ccccc2)(c2ccccc2)c2ccccc2)c(F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.