Provided herein is a compound of Formula (I) or a pharmaceutically acceptable salt thereof, wherein R19, R5, R3a, R1a, R1b, R2a, R2b, R4a, R4b, R6a, R6b, R7a, R7b, R11a, R11b, R12a, R12b, R18, RD, and q are defined herein. L is selected from the group consisting of: wherein A indicates the point of attachment at C17 and wherein X is selected from the group consisting of —C(O)N(R55a)(R55b), —N(R55a)(R55b), —N(R55b)C(O)(R55a), and R55C wherein R55c is carbon-bound substituted or unsubstituted heteroaryl or substituted or unsubstituted aryl. Also provided herein are pharmaceutical compositions comprising a compound of Formula (I) and methods of using the compounds, e.g., in the treatment of CNS-related disorders.