I3T i3t (2S,5S,8S)-14-cyclopentyloxy-2-(2-methylpropyl)-5-(phenylmethyl)-3,6,17-triazatetracyclo[8.7.0.0^{3,8}.0^{11,16}]heptadeca-1(10),11,13,15-tetraene-4,7-dione I3T