英文名称
N,3-dimethyl-2,4-dioxo-N-propanoylpentanamide;N-ethyl-N,2-dimethyl-3-oxobutanamide;methyl 3-[ethyl(methyl)amino]-2-methyl-3-oxopropanoate;N-methyl-N-(3-methyl-2,4-dioxopentyl)propanamide;methyl 2-methyl-4-[methyl(propanoyl)amino]-3,4-dioxobutanoate;methyl 2-methyl-4-[methyl(propanoyl)amino]-3-oxobutanoate