label: 5,11,17,23-tetrakis(1,1-dimethylethyl)-25,26-bis(3-hydroxy-2-oxopropoxy)-27,28-crown-4-calix(4)arene
label_lc: 5,11,17,23-tetrakis(1,1-dimethylethyl)-25,26-bis(3-hydroxy-2-oxopropoxy)-27,28-crown-4-calix(4)arene