Using Brc1cc(OCc2ccccc2)cc2ccccc12, CCCC[Sn](CCCC)(CCCC)CC(=O)OCC to produce CCOC(=O)Cc1cc(OCc2ccccc2)cc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.