Using CCCC[Sn](CCCC)(CCCC)c1ccccc1, CCOC(=O)c1nc(Br)c2c(c1O)c1ccccc1n2C to produce CCOC(=O)c1nc(-c2ccccc2)c2c(c1O)c1ccccc1n2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.