11-(4-Chlorophenyl)-4-(2,3-dihydro-1H-indole-1-carbonyl)-3,11-dimethyl-5,10-dioxatricyclo[7.4.0.0,2,6]trideca-1,3,6,8-tetraen-13-yl 5-[(3aS,4S,6aR)-2-oxo-hexahydro-1H-thieno[3,4-d]imidazolidin-4-yl]pentanoate 1g

11-(4-Chlorophenyl)-4-(2,3-dihydro-1H-indole-1-carbonyl)-3,11-dimethyl-5,10-dioxatricyclo[7.4.0.0,2,6]trideca-1,3,6,8-tetraen-13-yl 5-[(3aS,4S,6aR)-2-oxo-hexahydro-1H-thieno[3,4-d]imidazolidin-4-yl]pentanoate 1g