PostgreSQL INSERT syntax error command error

I don't know why error when Postgres SQL run this SQL command:

INSERT INTO "mb_member_points" ("code","value","acc_value","cur_value","cur_acc_value") 
VALUES ('A001132451','-Qyq2\','kL0GSG',1,1);

ERROR: syntax error at or near "kL0GSG" at character 120

table struct

I'm using PostgreSQL 8.1.3, Sequelize 4.44.