PROBLEM TO BE SOLVED : To provide pharmaceutical compositions for treating poly (ADP-ribose) polymerase-1 (PARP-1)-related diseases. SOLUTION : The present invention provides the following compound [where, R is a fluoroethyl group]. The PARP-1-related disease is selected from cancer or inflammation. The PARP-1-related disease is abnormal inflammation of lung. The subject is a human, a cat, a dog, a mouse, a guinea pig, a rabbit, a rat, a horse, a sheep, a cow, or a goat. SELECTED DRAWING : None COPYRIGHT : (C)2019, JPO&INPIT