CREATE TABLE table_name_43 (points VARCHAR(255), year VARCHAR(255), chassis VARCHAR(255), entrant VARCHAR(255), engine VARCHAR(255))
How many points does an entrant of Martini Racing, the engine of an Alfa Romeo flat-12 a chassis of brabham bt45, and the year 1976 have?
    
SQL: SELECT COUNT(points) FROM table_name_43 WHERE entrant = "martini racing" AND engine = "alfa romeo flat-12" AND chassis = "brabham bt45" AND year = 1976