Terbinafine Related Compound D; (E)-N,6,6-trimethyl-N-[(4-methylnaphthalen-1-yl)methyl]hept-2-en-4-yn-1-amine hydrochloride; 4-Methylterbinafine hydrochloride; Terbinafine EP Impurity D HCl; Terbinafine EP Imp D; (2E)-N,6,6-Trimethyl-N-[(4-methylnaphthalen-1-yl)methyl]-hept-2-en-4-yn-1-amine Hydrochloride