cyclopentyl (3-(2-methoxy-4-((o-tolylsulfonyl)carbamoyl)benzyl)-1-methyl-1H-indol-5-yl)carbamate;4-(5-cyclopentyloxycarbonylamino-1-methyl-1H-indol-3-ylmethyl)-3-methoxy-N-o-tolylsulfonylbenzamide;cyclopentyl 3-[2-methoxy-4-(2-methylphenylsulfonylcarbamoyl)benzyl]-1-methyl-1H-indol-5-ylcarbamate;4-(5-cyclopentyloxycarbonylamino-2-methylindol-3-yl-methyl)-3-methoxy-N-O-tolylsulfonylbenzamide;cyclopentyl N-[3-[[2-methoxy-4-(o-tolylsulfonylcarbamoyl)phenyl]methyl]-1-methyl-indol-5-yl]carbamate;cyclopentyl [3-(2-methoxy-4-{[(2-methylphenyl)sulfonyl]carbamoyl}benzyl)-1-methyl-1H-indol-5-yl]carbamate;N-[3-[[2-methoxy-4-[[(2-methylphenyl)sulfonylamino]-oxomethyl]phenyl]methyl]-1-methyl-5-indolyl]carbamic acid cyclopentyl ester;Cyclopentyl N-[3-[[2-Methoxy-4-[[[(2-methylphenyl)sulfonyl]amino]carbonyl]phenyl]methyl]-1-methyl-1H-indol-5-yl]carbamate