This will take a few minutes. Attention: the generated file has a size of approx. 12 GB, so make sure to have enough diskspace. If you're running the challenge with a ...

$ ccinput gaussian opt M062X -bs def2tzvp -f ethanol.xyz -n 8 --mem 32G %chk=calc.chk %nproc=8 %mem=32000MB #p opt M062X/Def2TZVP File created by ccinput 0 1 C -1.31970000 -0.64380000 0.00000000 H ...