I am not that familiar with the AIr Canada codes since I generally fly CX, but I did a search on ITA and found the following. Two Caveats, I am presuming an "L" fare is Latitude but hey who said AC was logical in their codes, and I don't know the OP's exact flight dates so I just picked a couple of dates in early February. Anyway, I got $1896.50 all in return with the following booking codes:

YTO AC HKG 690.57LLWHKGAC AC YTO 690.57LLWHKGAC NUC 1381.14 END ROE 1.06433 FARE CAD 1470.00 XT 17.00CA 20.00SQ 1.00XG 18.50HK 370.00YQ