英文别名N-BOC-CIS-4-CYANO-L-PROLINE METHYL ESTER; BOC-CIS-4-CYANO-L-PROLINE METHYL ESTER; 1,2-Pyrrolidinedicarboxylic acid, 4-cyano-, 1-(1,1-diMethylethyl) 2-Methyl ester, (2S,4S)-; (2S,4S)-4-Cyano-1,2-pyrrolidinedicarboxylic acid 1-(tert-butyl) 2-methyl ester; 1-O-tert-butyl 2-O-methyl (2S,4S)-4-cyanopyrrolidine-1,2-dicarboxylate; 1-tert-butyl 2-methyl (2S,4S)-4-cyanopyrrolidine-1,2-dicarboxylate; (2S,4S)-4-cyano-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester; Velpatasvir Intermediate 2 
