1 9Z6 (5r,12r,17r)-17-amino-12-carboxy-1,1,5-trihydroxy-4,4-dimethyl-6,10-dioxo-2-oxa-14,15-dithia-7,11-diaza-1-phosphaoctadecan-18-oic acid 1-oxide (non-preferred name) 1.000 2 9Z3 N-[(2r)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl-L-cysteine 0.781