(9R,10Z,12Z,16R,16aS,17S,18R,19aR,23aR)-25-hydroxy-9-[(1S)-1-hydroxyethyl]-16a,21-dimethyl-6,7,16,16a,22,23-hexahydro-3H,18H,19aH-spiro[5,9:16,18-dimethano[1,6,12]trioxacyclooctadecino[3,4-d]chromene-17,2'-oxirane]-3,14(9H)-dione
CAS No. 60538-73-0