653574-34-6

5,45:6,12:15,19:22,28:29,35:38,42-Hexamethenotetrabenzo[a,e,t,x]cyc looctatriacontene-47,52-diol, 13,14,20,21,36,37,43,44-octadehydro-49,50-dimethoxy-, (5R,28R)-