preferred_name: N-((5-(acetyloxy)-6,6a,7,13,14,16-hexahydro-8,14-dihydroxy-9-methoxy-4,10,17-trimethyl-7,13-imino-12H-1,3-dioxolo(7,8)isoquino(3,2-b)(3)benzazocin-16-yl)methyl)-3-(3-(trifluoromethyl)phenyl)-2E-propenamide