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_101336_1 ( no_of_cu_o_planes_in_unit_cell VARCHAR, formula VARCHAR )

### Question ###
How many times is the formula tl 2 ba 2 cuo 6?

### Accurate SQL ###

SELECT no_of_cu_o_planes_in_unit_cell FROM table_101336_1 WHERE formula = "Tl 2 Ba 2 CuO 6"