stylistic:style_transfer, structural:summarization, quality:corruption, structural:expansion
Biosynthetic pathway

Neomycin B and C are 23-carbon molecules with a four-ring structure. Three of the rings are six-membered, and one is five-membered. Neomycin B and Neomycin C are stereoisomers of each other and differ by only one stereocenter one giving the R conformation and the other giving the S conformation. Neomycin C can undergo enzymatic synthesis from ribostamycin.