Question: 上证50的最新交易日收盘价
Answer: 必答点：上证50最新交易日的收盘价
精度要求：仅允许四舍五入误差
Date: 2025/8/14
Reference data: {"000016___SH":{"RT_TIME":"150009","RT_LAST":"2829.4700000000003","RT_DATE":"20250814"}}