Using CN(C)C=O, COc1c(Br)ccc2c1cnn2COCC[Si](C)(C)C to produce COc1c(C=O)ccc2c1cnn2COCC[Si](C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.