label: 15-methylhexadecasphinganine + a fatty acyl-CoA <=> N-acyl-15-methylhexadecasphinganine + CoA + H(+)
label_lc: 15-methylhexadecasphinganine + a fatty acyl-coa <=> n-acyl-15-methylhexadecasphinganine + coa + h(+)