Using O=Cc1ccc(B(O)O)cc1, CN(Cc1cccc(Br)c1)C(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)NCc1cccc(-c2ccc(C=O)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.