Compound 46

(6S,10S,17R,18S,19S,P)-19-hydroxy-12,13-dimethoxy-6,18,19-trimethyl-7-methylene-8-oxo-14-((triethylsilyl)oxy)-5,6,7,8-tetrahydro-10H-15,10-propano[1,3]dioxolo[4',5':5,6]benzo[1,2-g]benzo[i][1,6]dioxacycloundecin-17-yl (Z)-2-methylbut-2-enoate

From: Mimicking oxidative radical cyclizations of lignan biosynthesis using redox-neutral photocatalysis