{"batchcode": "PFIZER ER8732", "histograms": [{"batchcodes": ["PFIZER ER8732", "PFIZER EW0171"], "histogram": {"Asthenia": 1, "Fatigue": 1, "Pain in extremity": 1}}, {"batchcodes": ["PFIZER ER8732"], "histogram": {"Rash vesicular": 1, "Tinnitus": 1}}]}