from the start onwards of testing praziquantel ( 2 - cyclohexyl - carbonyl - 1,2,3,6,7,11 b - hexahydro - 4h - pyrazino [ 2,1-a ] isoquinolin-4-one , embay 8440 , biltricide ) proved to be very promising .
C0032911
praziquantel
C0702014
biltricide