Using COc1cccc(-c2nc(OS(=O)(=O)C(F)(F)F)co2)c1, CC(C)(C)OC(=O)Nc1ccc([Sn](C)(C)C)cc1 to produce COc1cccc(-c2nc(-c3ccc(NC(=O)OC(C)(C)C)cc3)co2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.