(20Z)-4,6,17,23,26-pentachloro-13-methoxypentacyclo[20.2.2.1~10,14~.1~15,19~.0~2,7~]octacosa-1(24),2,4,6,10(28),11,13,15(27),16,18,20,22,25-tridecaene-5,16,24-triol (non-preferred name) 10,12,6',10'14'-Pentachloroisoplagiochin C 8H-7,14c-methanocyclohepta[3',4']benz[1',2':2,3]azuleno[6,5-c][1,2]dioxole-3,8(4H)-dione, 15-(acetyloxy)-1,2,5,7,7a,9,10,10a,13,14b-decahydro-10a-hydroxy-1,6,9,13,13,14b-hexamethyl-4-(1-methylethyl)-, Bazzanin O InChI=1/C29H19Cl5O4/c1-38-24-7-4-13-2-5-15-17(11-23(32)29(37)25(15)33)20-12-21(30)16(26(34)28(20)36)6-3-14-9-19(18(24)8-13)27(35)22(31)10-14/h3-4,6-12,35-37H,2,5H2,1H3/b6-3