1 NS6 (3r)-3-cyclopentyl-7-[(4-methylpiperazin-1-yl)sulfonyl]-3,4-dihydro-2h-1,2-benzothiazine 1,1-dioxide 1.000 2 NS7 (3r)-3-cyclopentyl-6-methyl-7-[(4-methylpiperazin-1-yl)sulfonyl]-3,4-dihydro-2h-1,2-benzothiazine 1,1-dioxide 0.964 3 NS3 (3s)-3-cyclopentyl-6-methyl-7-[(4-methylpiperazin-1-yl)sulfonyl]-3,4-dihydro-2h-1,2,4-benzothiadiazine 1,1-dioxide 0.897