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_15366768_1 (element VARCHAR, isotopic_mass___u__ VARCHAR)
### Question:
What is the name of the element with isotopic mass of 158.925 34(2)?
### Answer:
SELECT element FROM table_15366768_1 WHERE isotopic_mass___u__ = "158.925 34(2)"