Using COC(Cc1ccc2c(n1)COC2=C1C(=O)Nc2ccc(F)cc21)OC to produce O=CCc1ccc2c(n1)COC2=C1C(=O)Nc2ccc(F)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.