Complex sentence: Lecter then kills Doemling just as he is about to surgically remove Graham's face and graft it onto Mason's, and later informs Margot and Alana how to milk the unconscious Mason's prostate to give Margot the sperm she needs to conceive a child.
Split into simpler sentences: Lecter then kills Doemling just as he is about to surgically remove Graham's face and graft it onto Mason's. Lecter helps Margot and Alana milk the unconscious Mason's prostate to give Margot the sperm she needs to conceive a child.