CREATE TABLE table_name_80 (appearance VARCHAR, polyphenyl_ether VARCHAR)

What does Polyphenyl Ether of 3- and 4-ring oxythio look like?
SELECT appearance FROM table_name_80 WHERE polyphenyl_ether = "3- and 4-ring oxythio"
SELECT "appearance" FROM "table_name_80" WHERE "3- and 4-ring oxythio" = "polyphenyl_ether"