You'll have to determine how much sugar is in the syrup. If it has any king of a 'Calories from carbohydrates' number, figure 100 Calories is about one ounce of sugar.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk