From the choices provided below, list the reagent(s) in order that will react with cis-3-hexene to form meso-3,4-hexanediol. List your answer as a single letter (single-step transformation) or a series of letters (multi-step transformation) with no commas separating them. For example, "hg" corresponds to: PCC NaOH NOTE: The order you in which you list your letters matters! Reagents: CL2/H2O RCO3H K2Cr2O7, H2SO4, H2O. heat SOCI2, pyridine NaNH2 (3 equivalents) OSO4, H2O2 NaOH pyridinium chlorochromate (PCC).