1-guanidino-1-deoxy-scyllo-inositol 4-phosphate + H2O <=> 1-guanidino-1-deoxy-scyllo-inositol + phosphate
1-guanidino-1-deoxy-scyllo-inositol 4-phosphate + h2o <=> 1-guanidino-1-deoxy-scyllo-inositol + phosphate