Complex sentence: It is said that Somerset Maugham modelled the character of John Ashenden after himself and "Chandra Lal" after Virendranath Chattopadhyaya, an Indian Nationalist in Germany during the war.
Split into simpler sentences: It is said that Somerset Maugham modelled the character of John Ashenden after himself. He is supposed to have modelled "Chandra Lal" after Virendranath Chattopadhyaya, an Indian Nationalist in Germany during the war.