PI5 pi5 N-[3-(8-SEC-BUTYL-7,10-DIOXO-2-OXA-6,9-DIAZA-BICYCLO[11.2.2]HEPTADECA-1(16),13(17),14- TRIEN-11-YLAMINO)-2-HYDROXY-1-(4-HYDROXY-BENZYL)-PROPYL]-3-METHYL-2- (2-OXO-PYRROLIDIN-1-YL)-BUTYRAMIDE PI5