111216-62-7 16-Hydroxy-17-methylenenapyradiomycin A1 2H-Naphtho(2,3-b)pyran-5,10-dione, 3,4a-dichloro-3,4,4a,10a-tetrahydro-6,8-dihydroxy-10a-(6-hydroxy-3,7-dimethyl-2,7-octadienyl)-2,2-dimethyl- Napyradiomycin A2 Npd-A2