Erratum to "Lycogladines A-H, fawcettimine-type Lycopodium alkaloids from Lycopodium complanatum var. glaucum Ching" [Tetrahedron 74 (2018) 1692–1697]. Issue 31 (2nd August 2018) - Zhang, Zhi-Jun; Qi, Yan-Yan; Wu, Xing-De; Su, Jia; Zhao, Qin-Shi