Using CC1(c2cccc(F)c2)NC(=O)c2c(Cl)cc(Nc3cc(NC(=O)C4CC4)ncn3)c(=O)n21, CCOC(=O)c1ncc(Br)cc1F to produce O=C1NC(c2cccc(F)c2)n2c1c(Cl)cc(Br)c2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.