Using COc1cc([Sn](C)(C)C)c(C=O)cc1OCOCC[Si](C)(C)C to produce COc1cc([Sn](C)(C)C)c(CO)cc1OCOCC[Si](C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.