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_14856023_18 ( points_classification VARCHAR, general_classification VARCHAR, team_classification VARCHAR )

### Question ###
Name the points classification for mark renshaw and team csc

### Accurate SQL ###

SELECT points_classification FROM table_14856023_18 WHERE general_classification = "Mark Renshaw" AND team_classification = "Team CSC"