The block in which the above post is included has a merkle root of 361336a3fd0549695eef206a41272b7548fe8082.
To find the winner we:

1. Convert the merkle root into base 10:
   361336a3fd0549695eef206a41272b7548fe8082 = 308713975649047672696682608091279076067328819330.
2. Compute the residual after dividing by the number of tickets: 308713975649047672696682608091279076067328819330 mod 338 = 288.
3. This is the winning ticket, held by @frdem3dot0.

Congratulations!