Арсеназо I

AsO(OH)2|\|`//`\`||/\_(x1)N=N_(x1)/\|\//<\SO3H`>`|`\\<`|OH>`/|`/`\\<`/HO3`S>`|/`|OH
|<\SO3H>`//`\`|`\<`|OH>`//|<`/HO3`S>\\/`|/<`|OH>\\_(x1.5)N=N_(x1.5)|\//`|`\\`/|c|As<`\\O><|HO>\OH
OH`-S`|O|c|O`|``/|`/<|OH>`\\`|`\`//<`\S`|O|c|O`|`-HO>|\\<|OH>/`|0//\|\N_(x1,N2)N\/\||`/`\\`|/`|As`|O|<`-HO>-OH
`\<`|AsO3H2>`/|\/`|_o-N=N-|<`/HO3`S>\/`|`\<`|OH>`/_o/0\0/<`|OH>\|<\SO3H>`/`\`|0_o

Брутто-формула: C16H13AsN2O11S2