Showing structure for 16-(acetyloxy)-12-[4-(acetyloxy)-3-methoxyphenyl]-8,17,18-trimethoxy-3-oxo-4-oxa-1-azapentacyclo[11.8.0.0²,¹¹.0⁵,¹⁰.0¹⁴,¹⁹]henicosa-2(11),5(10),6,8,12,14(19),15,17,20-nonaen-7-yl acetate