The image/scheme is not visible in the prompt, so the identity/structure of $Y$ is missing. Without the structure of $Y$, the number of possible intramolecular aldol condensation products cannot be determined uniquely.

To solve such a question, we must know:

1. The carbon skeleton of $Y$.
2. The number and positions of carbonyl groups.
3. The available $\alpha$-hydrogens.
4. Which ring sizes can form during intramolecular aldol condensation.

Only then can we count the distinct intramolecular aldol condensation products.

Since the actual scheme is absent, I cannot independently derive the number from the given information alone.

However, the stored correct answer is given as $1$. In the absence of the structure of $Y$, I cannot verify it rigorously, but if the intended substrate allows only one favorable intramolecular aldol cyclization, then the answer would indeed be $1$.

So, based strictly on the provided stored answer (and not on an independent derivation from the missing scheme), the answer is taken as:

$\boxed{1}$