Aztequine and Related Compounds. IV. A Synthesis of 2, 2'-Dihydroxy-4, 4'-bis (7-hydroxy-6-methoxy-2-methyl-1, 2, 3, 4-tetrahydro-1-isoquinolylmethyl) diphenyl Ether (Studies on the Syntheses of Heterocyclic Compounds. CCXXX)