preferred_name: N-(((3S,8S)-3-(4-((3,4-Dichlorobenzyl)oxy)phenyl)-7-((1S)-1-phenylpropyl)-2,3,6,7,8,9-hexahydro(1,4)dioxino(2,3-g)isoquinolin-8-yl)carbonyl)-4-(2,3-dimethyl-4-pyridinyl)-L-phenylalanine dihydrochloride