Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### 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"