The ornamental design for a bottlecap, as shown and described.
FIG. 1 is a perspective view of a bottle cap of our new design in a first configuration;
FIG. 2 is another perspective of the bottle cap shown in FIG. 1;
FIG. 3 is a front view of the bottle cap shown in FIG. 1;
FIG. 4 is a left side view of the bottle cap shown in FIG. 1;
FIG. 5 is a right side view of the bottle cap shown in FIG. 1;
FIG. 6 is a perspective view of the bottle cap in a second configuration;
FIG. 7 is a another perspective view of the bottle cap shown in FIG. 6; and,
FIG. 8 is a front view of the bottle cap shown in FIG. 6.
The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment and form no part of the claimed design.