tetrabromofluorescein

[te-truh-broh-moh-floo-res-ee-in, -flaw-, -floh-] /ˌtɛ trəˌbroʊ moʊ flʊˈrɛs i ɪn, -flɔ-, -floʊ-/
noun, Chemistry
1.
eosin (def 1).