entrance entrance 1 entrance 3 entrance back view CS corrider left CS corridor left back face CS corrider left 1 S120 S120-1 infrontS118D infrontS118D Back face infrontS118D 1 infrontS118D infrontS118E S118E S118E-1 S118E-2 S118E-3 S118C S118C-1 S118C-2 CS corridor right 1 infrontS118B S118B S118B-1 S118B-2 S118B-3 infront-lab lab lab-1 lab-2 lab-3 S114C S114C 1 S114B S114B-1