2H-Oxireno[e][2]benzoxacyclotetradecin-6,12(3H,7H)-dione, 8-chloro-1a,4,5,14,15,15a-hexahydro-9,11-dihydroxy-14-methyl-, (1aR,14S,15aR)- AIDS-181728 AIDS181728 Tetrahydromonorden