A 32-year-old woman at 10 weeks’ gestation presents with four days of almost no sleep, excessive spending and increasingly intrusive plans to start several businesses. She has become irritable and is hearing a voice accusing her of being dishonest. Her ECG shows a corrected QT interval of 520 milliseconds, and she has type 2 diabetes with a body mass index of 36 kg/m². She has taken no psychotropic medication during this pregnancy and agrees to treatment. Which one of the following is the most appropriate antipsychotic?