Provided herein are compounds of Formula I and/or salts thereof; wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 and R23 are independently chosen from H and D. At least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R22 and R23 is enriched with deuterium, and R19, R20, and R21 are independently chosen from H and D; or two of R19, R20, and R21 are enriched with deuterium. Also provided are medicaments comprising these compounds and methods for treating central nervous system disorders with the compounds and medicaments described herein.L'invention concerne des composés de formule I [Formule I] et/ou des sels correspondants; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 et R23 étant indépendamment choisis parmi un H et un D. Au moins l'un de R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R22 et R23 est enrichi en deutérium, et R19, R20 et R21 sont indépendamment choisis parmi un H et un D; ou deux de R19, R20 et R21 sont enrichis en deutérium. L'invention concerne également des médicaments comprenant ces composés et des méthodes de traitement de troubles du système nerveux central présentant les composés et les médicaments décrits dans la description.