Yohimban-16-carboxylic acid, 11,17-dimethoxy-18-((3,4,5-trimethoxybenzoyl)oxy)-, methyl ester, (3beta,16beta,17alpha,18beta,20alpha)-, mixt. with 5-(aminosulfonyl)-4-chloro-2-((2-furanylmethyl)amino)benzoic acid