16772-63-7 Naphtho(1,2-c)furan-3(1H)-one, 5,5a,6,7,8,9,9a,9b-octahydro-5,9b-dihydroxy-6,6,9a-trimethyl-, (5R-(5alpha,5abeta,9aalpha,9bbeta))- Pereniporin B