Resources:
  Bucket1:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: !Split [ 
        ' ', 
        !ImportValue SomeSharedBucketName
      ]
  Bucket2:
    Type: AWS::S3::Bucket
    Properties:
      BucketName:
        !Split
        - ' '
        - !ImportValue SomeSharedBucketName