Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_23390604_1 (mohsen_rezaee INTEGER, mir_hossein_mousavi VARCHAR)
### Question:
What is the highest score for candidate Mohsen Rezaee when  candidate mir-hossein mousavi  scored 837858 votes?
### Answer:
SELECT MAX(mohsen_rezaee) FROM table_23390604_1 WHERE mir_hossein_mousavi = 837858