5-(2-(2-(2-(2-(dimethylaminoethylaminocarbonyl)-1-methylpyrrol-4-yl)aminocarbonyl-1-methylpyrrol-4-yl)aminocarbonylethylaminocarbonyl-1-methylpyrrol-4-yl)aminocarbonyl-1-methylpyrrol-4-yl)aminocarbonylpentahydroxamic acid