Crystal structure of tetraethyl 27,30-dioxo-7,12,20,25-tetra-<i>tert</i>-butyl-3,16-dioxa-9,22,28,31-tetrathiaheptacyclo[21.3.1.1<sup>1,5</sup>.1<sup>4,8</sup>.1<sup>10,14</sup>.1<sup>14,18</sup>.1<sup>17,21</sup>]dotriaconta-4,6,8(29),10,12,17,19,21(32),23,25-decaene-2,2,15,15-tetracarboxylate
Acta crystallographica. Section E, Crystallographic communications