preferred_name: CARBAMIC ACID, (5-(ACETYLOXY)-14-CYANO-6,6A,7,13,14,16-HEXAHYDRO-9-METHOXY-8-(METHOXYMETHOXY)-4,10,23-TRIMETHYL-19-OXO-6,16-(EPITHIOPROPANOXYMETHANO)-7,13-IMINO-12H-1,3-DIOXOLO(7,8)ISOQUINO(3,2-B)(3)BENZAZOCIN-20-YL)-, 2-PROPENYL ESTER, (6R-(6R*,6AR*,7R*,13S*,14R*,16R*,20R*))-