6-({[(3R,6S)-6-[(1R,2S)-1,2-dihydroxy-2-(6-methoxy-1,5-naphthyridin-4-yl)ethyl]oxan-3-yl]amino}methyl)-2H,3H,4H-pyrido[3,2-b][1,4]thiazin-3-one

{(2R,3R,6S)-2-((4RS)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-6-trans-[2-(6-methoxy-[1,5]naphthyridin-4-yl)-vinyl]-tetrahydro-pyran-3-yl}-carbamic acid tert-butyl ester