RES 1b:x-dxyl-PEN-x:x 2b:b-dglc-HEX-1:5 3b:a-dgal-HEX-1:5 4b:b-dglc-HEX-1:5 5b:b-dglc-HEX-1:5|6:a 6s:(r)-lactate LIN 1:1o(4+1)2d 2:2o(4+1)3d 3:3o(4+1)4d 4:4o(6+1)5d 5:5o(3+1)6n