| abstract |
Provided herein is a compound of Formula (1-I): or a pharmaceutically acceptable salt thereof, wherein R2a, R2b, R3, R4a, R4b, R5, R6a, R6b, R11a, R11b, R16a, R16b, R19, R18, X, q, r, s, t, u, and n are defined herein. Also provided herein are pharmaceutical compositions comprising a compound of Formula (1-I) and methods of using the compounds, e.g, in the treatment of CNS -related disorders. |