Three brothers, including two of the nation’s most successful luxury real estate brokers, have been convicted of charges that they conspired to drug and rape multiple women. The verdict in the five-week trial of Oren, Alon and Tal Alexander came on Monday. It followed weeks of testimony by 11 women who said they were sexually assaulted by one or more of the brothers at fancy locales, often after receiving a drink that they believed was laced with drugs. The brothers had pleaded not guilty to charges that carried a potential life prison sentence.