Using COc1cc(Br)cc(CO[Si](C(C)C)(C(C)C)C(C)C)c1OC, O=CN1CCOCC1 to produce COc1cc(C=O)cc(CO[Si](C(C)C)(C(C)C)C(C)C)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.