Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_46300 ( "Rank" real, "Heat" real, "Name" text, "Nationality" text, "Time" text )

### Question ###
what is the name when the heat is less than 3, the rank is less than 18, the nationality is east germany and the time is 2:35.31?

### Accurate SQL ###

SELECT "Name" FROM table_46300 WHERE "Heat" < '3' AND "Rank" < '18' AND "Nationality" = 'east germany' AND "Time" = '2:35.31'