Table schema:
CREATE TABLE table_21312845_1 (directed_by VARCHAR, production_code VARCHAR, written_by VARCHAR)

Question: Who directed the episode with a production code greater than 4301103.585233785 that was written by Curtis Kheel?
SQL: SELECT directed_by FROM table_21312845_1 WHERE production_code > 4301103.585233785 AND written_by = "Curtis Kheel"