Varioloid A, a new indolyl-6,10b-dihydro-5aH-[1]benzofuro[2,3-b]indole derivative from the marine alga-derived endophytic fungus Paecilomyces variotii EN-291 - Zhang, P; Li, X M; Mao, X X; Mándi, A; Kurtán, T; Wang, B G (Beilstein J Org Chem, 2016)