label: ethyl (2R)-4-[(6-chloronaphthalen-2-yl)sulfonyl]-6-oxo-1-[(1-pyridin-4-ylpiperidin-4-yl)methyl]piperazine-2-carboxylate
label_lc: ethyl (2r)-4-[(6-chloronaphthalen-2-yl)sulfonyl]-6-oxo-1-[(1-pyridin-4-ylpiperidin-4-yl)methyl]piperazine-2-carboxylate