The ornamental design for a cantileverrack with backsetbraces, as shown and described.
FIG. 1 is a perspective view of a cantilever rack with backset braces;
FIG. 2 is a perspective view thereof; shown in use with environment.
FIG. 3 is a front end view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a rear-end view.
The broken lines in the drawings are for the purpose of illustrating the environment of a cantilever rack with backset braces only and form no part of the claimed design.