2,2-Dimethyl-propionic acid 5-[2-(benzyl-{2-[2-(4-methoxy-phenyl)-acetylamino]-ethyl}-amino)-acetyl]-2-(2,2-dimethyl-propionyloxy)-phenyl ester 生成 2,2-Dimethyl-propionic acid 2-(2,2-dimethyl-propionyloxy)-5-(1-hydroxy-2-{2-[2-(4-methoxy-phenyl)-acetylamino]-ethylamino}-ethyl)-phenyl ester