Using the attached full vancomycin dimer structure (PDB 1AA5 chains A+B combined, 264 atoms), compute the equal-weight radius of gyration Rg = sqrt[(1/N) sum_i ||r_i - r_centroid||^2] over all N=264 atoms, where r_centroid is the mean of all atom positions. Report Rg in angstrom to four decimal places.

The attachment is the complete combined dimer structure, 264 atoms. Coordinates are in angstrom (1 nm = 10 angstrom). Atom rows are numbered starting at 1, immediately after the two header lines. Row order matches the order in this attachment exactly; do not renumber or reorder atoms. All atoms are equal-weighted (no mass weighting).