. . "O=C=S" . "Carbonyl sulfide" . "Carbon oxysulfide" . . . . "OCS" . . . "Oxidosulfidocarbon" . "carbonyl sulfide" . . . . . . "Carbon oxide sulfide" . "carbonyl sulfide, OCS" . . . . . . . . "Carbonyl sulfide" . . "Tricarbon sulfide" . . . . "Carbonyl sulfide" . "COS" . . .