A 28-year-old woman presents to hospital with fever, loin pain, and vomiting. She is diagnosed with acute pyelonephritis. She reports experiencing anaphylaxis (difficulty breathing, facial swelling) immediately after taking Amoxicillin in the past. According to NICE guidelines for empirical IV antibiotic therapy for pyelonephritis in adults, which of the following would be a suitable option given her severe penicillin allergy?