4 5 : ▁ ▁E G IS - 3 8 8 6 : ▁ ▁c pd ▁# 2 7 8 ▁( m ono - phen yl ▁ben zt rop ine ): ▁The ▁ben zo y lo xy ▁can ▁even ▁be ▁replaced ▁with ▁other ▁branch ▁form ations ▁( termin ating ▁in ▁a ▁ben z ene ▁ring ) ▁and ▁the ▁bridge ▁between ▁will ▁still ▁serve ▁to ▁create ▁a ▁par as ym path ol yt ic ▁drug ▁comp ound ▁that ▁causes ▁behavior al ▁stim ulation , ▁as ▁the ▁above : ▁NK - 1 1 4 5 ▁" t rop ine - 3 β - phen yl ▁ ether ." ▁Der am c ic lane ▁( EG IS - 3 8 8 6 ) ▁is ▁a ▁cam ph or ▁derived ▁ser ot on erg ic . ▁Similar ▁to ▁several ▁other ▁kinds ▁of ▁a rom at ics ▁in ▁structure ▁and ▁being ▁an ▁inverse ▁ag on ist ▁at ▁the ▁ 5 - HT 2 C ▁re ceptor ▁as ▁well ▁as ▁an ▁ant agon ist ▁at ▁the ▁ 5 - HT 2 A . ▁ ▁Az ap roc in : ▁ ▁Pseud otrop ine ary le ther : ▁▁ ▁Az ap roc in ▁( a ▁fast ▁on set , ▁short ▁duration ▁op io id ▁anal ges ic ▁with ▁trop ane ▁em ulating ▁every ▁constitu ent ▁element ▁shared ▁by ▁c oca ine ; ▁somewhat ▁similar ▁to ▁how ▁f ent any l ▁over l ays ▁m eth yl phen id ate , ▁save ▁for ▁in ▁that ▁case ▁there ' s ▁an ▁additional