Complex sentence: To Jack Ronald Hillier, there are occasional signs of Sharaku struggling with his medium, compares Sharaku to French painter Paul Cézanne, who he believes "has to struggle to express himself, hampered and angered by the limitations of his draughtsmanship".
Split into simpler sentences: To Jack Ronald Hillier, there are occasional signs of Sharaku struggling with his medium. Hillier compares Sharaku to French painter Paul Cézanne, who he believes "has to struggle to express himself, hampered and angered by the limitations of his draughtsmanship".