Correction: Discovery of 3-Oxabicyclo[4.1.0]heptane, a Non-nitrogen Containing Morpholine Isostere, and Its Application in Novel Inhibitors of the PI3K-AKT-mTOR Pathway (Journal of Medicinal Chemistry (2019) 62: 15 (6972−6984) DOI: 10.1021/acs.jmedchem.9b00348)