4H-1,16-Etheno-5,15-(propaniminoethano)furo(3,4-l)(1,5,10)triazacyclohexadecine-4,21-dione, 3,3a,6,7,8,9,10,11,12,13,14,15-dodecahydro-3-(4-hydroxy-3-methoxyphenyl)-, (3R-(3R*,3aR*,15S*))- 71327-57-6 Ephedradine B