US11535600B2 - Prodrugs of 4-((1R,3S)-6-Chloro-3-Phenyl-2,3-Dihydro-1h-Inden-1-Yl)-1,2,2-Trimethylpiperazine and 4-((1R,3S)-6-Chloro-3-(phenyl-D5)-2,3-Dihydro-1h-Inden-1-Yl)-2,2-Dimethyl-1-(methyl-D3)piperazine