4,6:19,17-Di(epoxymethano)tetrabenzo[b,h,k,q][1,10,5,6,14,15]dioxatetraazacyclooctadecine-1,22-dicarboxylic acid, 2,9,14,21-tetrahydroxy-3,20-bis(hydroxymethyl)-7,16-dimethyl-28,29-dioxo-, (10Z,12Z,23Z,25Z)- AIDS-132580 AIDS132580 NSC626807