4-Sulfothiacalix[4]Arene Sodium Salt

Tetrasodium;2,8,14,20-tetrathiapentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1 (25),3 (28),4,6,9 (27),10,12,15,17,19 (26),21,23-dodecaene-5,11,17,23-tetrasulfonate

C1=C2C=C (C=C1SC3=CC (=CC (=C3) S (=O) (=O) [O-]) SC4=CC (=CC (=C4) SC5=CC (=CC (=C5) S2) S (=O) (=O) [O-]) S (=O) (=O) [O-]) S (=O) (=O) [O-].[Na+].[Na+].[Na+].[Na+]