1884 opéra comique in five acts by Jules Massenet based on a novel by the Abbé Prévost (5)
I believe the answer is:
manon
(Other definitions for manon that I've seen before include "Operatic heroine" , "- - Lescaut (Puccini opera)" , "Mlle Lescaut (Massenet, Puccini)" , "Opera by Massenet" .)