an N-acyl-sphingoid base + H2O = a sphingoid base + a fatty acid
an n-acyl-sphingoid base + h2o = a sphingoid base + a fatty acid
an N-acyl-sphingoid base + H2O = a sphingoid base + a fatty acid
an n-acyl-sphingoid base + h2o = a sphingoid base + a fatty acid