In organic chemistry, a pyrrole is a five membered aromatic ring, 4 elements of which are carbonatoms, one element of which is a nitrogen atom. The molecular formula for a pyrrole is C4NH5. The structure is:
... jealously of Dolly's sister Katarina (Kitty) whom he has previously been courting.
As the novel opens, Stiva's friend Levin has returned Moscow from his country estate ...