.beta.-Peltatin, O-methyl- 38943-35-0 Furo[3',4':6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one, 5,8,8a,9-tetrahydro-10-methoxy-5-(3,4,5-trimethoxyphenyl)-, (5R-(5.alpha.,-5a.alpha.,8a.alpha.))- NSC126726 PELTATIN, BETA, ALPHA METHYL ETHER