152607-03-9 Spiro[2a,6a-epoxynaphth[2,3-b]oxirene-2(1aH),2'-naphtho[1,8-de][1,3]dioxin]-3(6H)-one,7,7a-dihydro-6,7-dihydroxy-, [1aR-(1aa,2ab,6a,6ab,7b,7aa)]- 132196-53-3 2H,4H-Benzo[a]pyrano[3,4-j]xanthene-4,11(7aH)-dione,1,8,9,9a,10,13a,13b,14-octahydro-1,5,8-trihydroxy-2,7a,10,10,13a-pentamethyl-,[1S-(1a,2a,7ab,8a,9ab,13aa,13ba)]-