7-Aethylendioxy-2.4b-dimethyl-2-methallyl-1-aethoxycarbonylmethylen-1.2.3.4.4a.4b.5.6.7.8.10.10a-dodecahydro-phenanthrenol-(4) 、 alkaline earth salt of/the/ methylsulfuric acid 生成 7-Aethylendioxy-2.4b-dimethyl-2-methallyl-1-carboxymethylen-1.2.3.4.4a.4b.5.6.7.8.10.10a-dodecahydro-phenanthrenol-(4)