CAS No 11052-72-5 , Spiro[2,26-dioxabicyclo[23.3.1]nonacosa-4,18,20-triene-27,2'-[2H]pyran]-3,9,13-trione,22-ethyl-3',4',5',6'-tetrahydro-7,11,15-trihydroxy-6'-[(2R)-2-hydroxypropyl]-5',6,8,10,12,14,16,28,29-nonamethyl-,(1R,2'R,4E,5'S,6S,6'S,7R,8S,10R,11R,12S,14S,15S,16R,18E,20E,22R,25S,28S,29R)-