.BETA.-CYCLODEXTRIN, 6A,6B,6C,6D,6E,6F,6G-HEPTAKIS-S-(2-CARBOXYETHYL)-6A,6B,6C,6D,6E,6F,6G-HEPTATHIO-, HEPTASODIUM SALT
.beta.-cyclodextrin, 6a,6b,6c,6d,6e,6f,6g-heptakis-s-(2-carboxyethyl)-6a,6b,6c,6d,6e,6f,6g-heptathio-, heptasodium salt