능률 고1 교과서 내용 입니다.

this spicy powder was not used in kimchi until long after chili peppers were first brought to korea in the late 16th century.

not a until b 구문인데요
not until을 붙여 쓴 구문으로 바꿔주세요.
문장이 길어서 조금 헷갈리네요.