103106-20-3 7,18a-Methano-6,10-metheno-5H-cyclohexadeca(b)pyran-5,19-dione, 3,4a-dichloro-2,3,4,4a,11,14,15,18-octahydro-9,20-dihydroxy-2,2,12,16-tetramethyl- 7,18a-Metheno-6,10-metheno-5H-cyclohexadeca(b)pyran-5,19-dione, 3,4a-dichloro-2,3,4,4a,11,14,15,18-octahydro-9,20-dihydroxy-2,2,12,16-tetramethyl- Napyradiomycin C1