87583-91-3

(10Z,12Z)-4,22-dihydroxy-9-(1-hydroxyethyl)-5,16a,21-trimethyl-4,5,6,7,16,16a,22,23-octahydro-3H,18H,19aH-spiro[16,18-methano[1,6,12]trioxacyclooctadecino[3,4-d]chromene-17,2'-oxirane]-3,14(9H)-dione