Compound 27

Methyl (rel-1S,21R)-18-{[tris(propan-2-yl)silyl]oxy}-3,13-diazapentacyclo[11.7.1.0²,¹⁰.0⁴,⁹.0¹⁷,²¹]henicosa-2(10),4,6,8,15,17-hexaene-1-carboxylate

From: Biogenetically inspired synthesis and skeletal diversification of indole alkaloids