CEDe: A collection of expert-curated datasets with atom-level entity annotations for Optical Chemical Structure Recognition - Hormazabal, Rodrigo; Park, Changyoung; Lee, Soonyoung; Han, Sehui; Jo, Yeonsik; Lee, Jaewan; Jo, Ahra; Kim, Seung Hwan; Choo, Jaegul; Lee, Moontae; Lee, Honglak (Advances in Neural Information Processing Systems, 2022)