Using CC1(C2=NCCN2)OCCc2c(Br)cccc21, CC(C)(C)C=O to produce CC1(C2=NCCN2)OCCc2c(C(O)C(C)(C)C)cccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.