Complex sentence: Delta Zeta and Alpha Sigma Tau are the sorority equivalencies of the IFC fraternities, and are "NPC Sororities" (National Panhellenic Conference), a governing body for 26 women's national and international sororities.
Split into simpler sentences: Delta Zeta and Alpha Sigma Tau are the sorority equivalencies of the IFC fraternities, otherwise known as "NPC Sororities". Their parent organizations are members of the National Panhellenic Conference, a governing body for 26 women's national and international sororities.