Using C[Si](C)(C)c1cc(C=O)co1, CCCC[Sn](CCCC)(CCCC)COCOCCOC to produce COCCOCOCC(O)c1coc([Si](C)(C)C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.