preferred_name: SPIRO(6,16-(EPITHIOPROPANOXYMETHANO)-7,13-IMINO-12H-1,3-DIOXOLO(7,8)ISOQUINO(3,2-B)(3)BENZAZOCINE-20,1'-(1H)PYRIDO(3,4-B)INDOLE)-14-CARBONITRILE, 5-(ACETYLOXY)-2',3',4',6,6A,7,9',13,14,16-DECAHYDRO-6',9-DIMETHOXY-8-(METHOXYMETHOXY)-4,10,23-TRIMETHYL-19-OXO-, (1'R,6R,6AR,7R,13S,14R,16R)-