Structure of S157

bam po 1.
MW22083: 197b6
bam po 2.
MW22083: 223b1
bam po 3.
MW22083: 351a4
bam po 4.
MW22083: 276a2
bam po 5.
MW22083: 297a2
bam po 6.
MW22083: 321b7
bam po 7.
MW22083: 343a2