N,N'-diacetylchitobiose(out) = N,N'-diacetylchitobiose(in)
n,n'-diacetylchitobiose(out) = n,n'-diacetylchitobiose(in)
N,N'-diacetylchitobiose(out) = N,N'-diacetylchitobiose(in)
n,n'-diacetylchitobiose(out) = n,n'-diacetylchitobiose(in)