81072-26-6 Alanine, N-(carboxymethyl)-, N-tert-butyl ester, 3-ester with 3-beta,14-dihydroxy-5-beta-card-20(22)-enolide, L- Card-20(22)-enolide, 3,14-dihydroxy-, 3-ester with N-(2,2-dimethyl-1-oxopropoxy)methylalanine