140447-68-3 3H-Pyrrolo(3,2-f)quinoline-1-carboxylic acid, 6,7,8,9-tetrahydro-8-chloro-4-(((1,1-dimethylethyl)dimethylsilyl)oxy)-2-methyl-6-((5,6,7-trimethoxy-1H-indol-2-yl)carbonyl)-, methyl ester