a configuration where substituents are on opposite sides of the ring
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(1R,2R)-2-<<(tert-Butyldiphenylsilyl)oxy>methyl>-1-(hydroxymethyl)cyclopropane
5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonylmethoxy-26,28-bis(diphenylphosphinomethoxy)calix<4>arene
