As nouns the difference between pyrrolocarbazole and dictyodendrin

is that pyrrolocarbazole is (organic compound) any of several isomeric tetracyclic heterocycles composed of a pyrrole ring fused to a carbazole moiety while dictyodendrin is (organic chemistry) any of a class of derivatives of pyrrolocarbazoles, extracted from marine sponges of the genus (taxlink), that inhibit aldose reductases.