英文名称
[1-ethyl-5-[[4-[2-ethyl-1-[3-(2-ethyl-1-hydroxybutyl)-4-[2-[1-ethyl-4-methyl-2,6-dioxo-5-(sulfomethyl)pyridin-3-ylidene]hydrazinyl]phenyl]butyl]-2-(2-ethyl-1-hydroxybutyl)phenyl]hydrazinylidene]-4-methyl-2,6-dioxopyridin-3-yl]methanesulfonic acid