having three, and only three, nitro groups bound to the ring

Full Title

Compounds containing nitro groups bound to a carbon skeleton > the carbon skeleton being further substituted by hydroxy groups > having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings > having nitro groups and hydroxy groups bound to carbon atoms of the same non-condensed six-membered aromatic ring > having three, and only three, nitro groups bound to the ring