{(E)-(S)-15-[(E)-3-(5-chloro-2-tetrazol-1-ylphenyl)acryloylamino]-9-oxo-8,17,19-triazatricyclo[14.2.1.0(2,7)]nonadeca-1(18),2,4,6,12,16(19)-hexaen-5-yl}carbamic acid methyl ester trifluoroacetate