carboxynorspermidine + NADP(+) + H2O <=> L-aspartate 4-semialdehyde + propane-1,3-diamine + NADPH + H(+)
carboxynorspermidine + nadp(+) + h2o <=> l-aspartate 4-semialdehyde + propane-1,3-diamine + nadph + h(+)