英语语法分析

The active ingredient in MAP's migraine drug, known as MAP0004, is dihydroergotamine, which has been used intravenously for 60 years by hospitals for treating severe migraines.

MAP的抗偏头痛药物的活性成分，代号为MAP0004，是双氢麦角胺，已经在医院中作为静脉用药用于治疗严重的偏头痛近60年。