(1aR,2Z,4E,6E,14R,15aR)-8-Chloro-1a,14,15,15a-tetrahydro-9,11-dihydroxy-14-methyl-6H-oxireno[e][2]benzoxacyclotetradecin-6,12(7H)-dione 6-[O-[2-(2-Oxo-1-pyrrolidinyl)ethyl]oxime]
(1ar,2z,4e,6e,14r,15ar)-8-chloro-1a,14,15,15a-tetrahydro-9,11-dihydroxy-14-methyl-6h-oxireno[e][2]benzoxacyclotetradecin-6,12(7h)-dione 6-[o-[2-(2-oxo-1-pyrrolidinyl)ethyl]oxime]