According to an Emory University analysis, 4th century Nubians likely intentionally brewed and consumed beer laden with one of these drugs. Coleman, Katz, and Menzel traced the prescription of these drugs by doctors in an early analysis studying the diffusion of innovations. The FTC sued Pfizer and American Cyanamid for engaging in conspiracy to acquire the patent for these drugs, but a court in 1982 later upheld the patent. Lloyd (*) Conover invented and patented one of these antibiotics, which can cause Fanconi syndrome if ingested when expired. These antibiotics were first produced by Yellapragada Subbarow and Benjamin Duggar from dechlorinating aureomycin. Like aminoglycosides, this class of antibiotics binds to the 30S small subunit, blocking (10[1])aminoacyl tRNA-synthetases from binding to the A site. For 10 points, name this class of antibiotics named for containing four rings. (10[1]-5[1])■END■ (10[1])