AIDS-108091 AIDS108091 Crocacin A [(2Z,5Z)-6-((6S,7S,8S,9S)-(2E,4E,10E)-7,9-Dimethoxy-3,6,8-trimethyl-11-phenyl-undeca-2,4,10-trienoylamino)-hexa-2,5-dienoylamino]-acetic acid, methyl ester