(=> (Protein ?Self)
(And (Exists (?A) (And (Prime-Component ?Self ?A) (Carbon ?A)))
(Exists (?B) (And (Prime-Component ?Self ?B) (Nitrogen ?B)))
(Exists (?C) (And (Prime-Component ?Self ?C) (Hydrogen ?C)))
(Exists (?D) (And (Prime-Component ?Self ?D) (Oxygen ?D)))))