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Title (Replace placeholders with actual geometry and job-specific flags; follow Gaussian input formatting.) Gaussian 16 Revision C.01 is a conservative maintenance update focused on robustness, small performance gains, and bug fixes while retaining the extensive methodological breadth that makes Gaussian a staple in quantum chemistry. For high-confidence results, users should pair careful methodological choices, cross‑validation, and proper documentation of software revision (e.g., Rev C.01) when reporting computational findings.