Known as: ET-743, Spiro(6,16-(epithiopropanoxymethano)-7,13-imino-12H-1,3-dioxolo(7,8)isoquino(3,2,-b)(3)benzazocine-20,1'(2'H)-isoquinolin)-19-one, 3',4',6,6a,7,13,14,16-Octahydro-5-(acetyloxy)-6',8,14-trihydroxy-7',9-dimethoxy-4,10,23-trimethyl-, (6R-(6-alpha,6a-beta,7-beta,13-beta,14-beta,16-alpha,20R*))-, ET 743