x1 = CRH
x2 = ACTH
x3 = F_HPA
x4 = F_Cell
x5 = y1
x6 = y2
x7 = y3
x8 = y4
x9 = y5
x10 = y6
x11 = y7
x12 = NAD
x13 = NMN
x14 = NAM
x15 = EntF
x16 = SIRT1
x17 = y8
x18 = NAMPT
x19 = feed2
x20 = feed3
x21 = PGC1amRNA
x22 = PGC1a
x23 = PGC1aN
x24 = PGC1aNact
x25 = FOXO1
x26 = PckG6p
x27 = Phpa
x28 = MR
x29 = GR_Cell
x30 = FGR_Cell
x31 = FMR
x32 = FMRN
x33 = FGRN_Cell
x34 = P
x35 = mRNAP
x36 = mRNARP
x37 = Rp
x38 = PR
x39 = GR_HPA
x40 = FGR_HPA
x41 = FGRN_HPA