I used the following line to try and add a vector shapefile to my qgis map, though it gives me syntax errors. Does anyone see something I don't?

iface.addVectorLayer("Users\pgcseismolab\Desktop\jaden_pgc_archive\Wells\WD\Shapefiles\wd_14\wd14.shp","wd_14","ogr"). 

I'm fairly new to python- do I have to define a variable before running this command?