136794-70-2 5,5a,8a,9-Tetrahydro-5-(4-hydroxy-3,5-dimethoxyphenyl)-9-((phenylmethyl)amino)-furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxol-6(8H)-one, (5R-(5alpha,5abeta,8aalpha,9beta))-