What is the coupon that has an issuer of Commerzbank AG?
CREATE TABLE table_21692771_1 (coupon VARCHAR, issuer VARCHAR)
SELECT coupon FROM table_21692771_1 WHERE issuer = "COMMERZBANK AG"
### Context: CREATE TABLE table_21692771_1 (coupon VARCHAR, issuer VARCHAR) ### Question: What is the coupon that has an issuer of Commerzbank AG? ### Answer: SELECT coupon FROM table_21692771_1 WHERE issuer = "COMMERZBANK AG"