(3R,4R)-1,3,4-trimethylpiperidine InChI=1/C8H17N/c1-7-4-5-9(3)6-8(7)2/h7-8H,4-6H2,1-3H3/t7?,8-/m0/s piperidine, 1,3,4-trimethyl-, (3R,4R)-