Expression Builder IIF function

Can I have the Iff function nested like the syntax below?

IIf([<pcDiscount__ITAG>]>'15' and [<Status>]=LookupValue("OPTY_STATUS", "New") and [<SalesStage>]='Submit Approval' or [<cDiscount_Amt_ITAG>] >'50000','Mike',IIf([<pcDiscount__ITAG>]<='15' and [<cDiscount_Amt_ITAG>] >='40000' and [<cDiscount_Amt_ITAG>] <='50000' and [<Status>]=LookupValue("OPTY_STATUS", "New") and [<SalesStage>]='Submit Approval', JoinFieldValue('<User>',[<OwnerId>],'<BusinessUnitLevel1>',IIf([<pcDiscount__ITAG>]<='10' and [<cDiscount_Amt_ITAG>] >='20000' and [<cDiscount_Amt_ITAG>] <='40000 and [<Status>]=LookupValue("OPTY_STATUS", "New") and [<SalesStage>]='Submit Approval',JoinFieldValue('<User>',[<OwnerId>],'<BusinessUnitLevel2>',[<pcDiscount__ITAG>]<='10' and [<cDiscount_Amt_ITAG>] >='10000' and [<cDiscount_Amt_ITAG>] <='20000' and [<Status>]=LookupValue("OPTY_STATUS", "New") and [<SalesStage>]='Submit Approval', JoinFieldValue('<User>',[<OwnerId>],'<BusinessUnitLevel3>','<BusinessUnitLevel3>')))