Using CCOC(=O)c1nc(Cl)c2c(c(Cl)cn2Cc2ccccc2)c1O, CC[Sn](CC)(CC)CC to produce CCOC(=O)c1nc(CC)c2c(c(Cl)cn2Cc2ccccc2)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.