Described herein are neuroactive steroids of the Formula (I): or a pharmaceutically acceptable salt thereof, wherein , A, R1, R2, R3a, R4a, R4b, R5, R7a, and R7b are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e.g., such for inducing sedation and/or anesthesia.