1 HMY (1ar,8s,13s,14s,15ar)-5,13,14-trihydroxy-3-methoxy-8-methyl-8,9,13,14,15,15a-hexahydro-6h-oxireno[k][2]benzoxacyclotetradecine-6,12(1ah)-dione 1.000 2 1FM (3s,5z,8s,9s,11e)-8,9,16-trihydroxy-14-methoxy-3-methyl-3,4,9,10-tetrahydro-1h-2-benzoxacyclotetradecine-1,7(8h)-dione 0.828