the definition of the substance, set down in a form similar to that used in the European Pharmacopoeia, shall be accompanied by any necessary explanatory evidence, especially concerning the molecular structure.
beidh aon fhianaise mhínitheach ag gabháil leis an sainmhíniú ar an ábhar, a leagfar síos i bhfoirm chomhchosúil lena bhfuil in úsáid in Pharmacopoeia Eorpach, go háirithe maidir leis an struchtúr móilíneach.