BRST complexWe want to have some description similar to Eq. (32) for Maxwell.In Type IIB the role of is played by the Ramond-Ramond bispinor superfield . In flat space one can think about as the product of left and right ’s:(but there are no such things as and ).As we explained, in Maxwell theory the superfield was interpreted as the generator of the ideal , more precisely of its “abelianization” . Is there a similar interpretation in Type IIB?