2-[({12-oxo-7-thia-9,11-diazatricyclo[6.4.0.0,2,6]dodeca-1(8),2(6),9-trien-10-yl}methyl)sulfanyl]acetic acid 5g

2-[({12-oxo-7-thia-9,11-diazatricyclo[6.4.0.0,2,6]dodeca-1(8),2(6),9-trien-10-yl}methyl)sulfanyl]acetic acid 5g