Complex sentence: Vinblastine was traditionally obtained from "Catharanthus roseus" also known as "Vinca rosea", a Madagascar Periwinkle, as it is generated in the plant by the joining of two alkaloids catharanthine and vindoline.
Split into simpler sentences: Vinblastine was traditionally obtained from "Catharanthus roseus", also known as "Vinca rosea", a Madagascar Periwinkle. It is generated in the plant by the joining of two alkaloids catharanthine and vindoline.