Question: What is the collaborational pen name of the Russian poet on whose novel "The Night of Devils" is loosely based on?
Sentence (from "Anna Battler"): Ánna Báttler (Russian: ) is the pen name of Ánna Vasílievna Levashóva (Russian: Анна Васильевна Левашова ; born May 16, 1981), a Russian poet, writer, actress, and philanthropist.
Relevant evidence: No