Definition: Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.
Input: Abstract: Dual left coronary systems, one originating normally and the other anomalously from the right sinus of Valsalva, is described in a 53-year-old patient with atypical chest pain with exercise-induced ST-depression in the anteroseptal area (V2-4). Clinical consequences of this hitherto undescribed anomaly are discussed.

Dual left coronary systems.