2-Piperazineacetic acid, 3,6-dioxo-5-isopropyl-, (2S-cis)- 2-Piperazineacetic acid, 5-(1-methylethyl)-3,6-dioxo-, (2S-cis)- 3,6-Dioxo-5-isopropyl-2-piperazineacetic acid 78859-46-8 Cairomycin A