1-Benzyl-7-isopropyl-3-(5-tetrazolyl)-1-azaazulen-2-one 166042-09-7 7-(1-Methylethyl)-1-(phenylmethyl)-3-(1H-tetrazol-5-yl)cyclohepta(b)pyrrol-2(1H)-one Cyclohepta(b)pyrrol-2(1H)-one, 7-(1-methylethyl)-1-(phenylmethyl)-3-(1H-tetrazol-5-yl)-