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_name_30 (abb VARCHAR, disorder VARCHAR)
### Question:
What is the abbreviation of the enzyme involved in carbamoyl phosphate synthetase i deficiency?
### Answer:
SELECT abb FROM table_name_30 WHERE disorder = "carbamoyl phosphate synthetase i deficiency"