4-deoxy-4-sulfo-D-erythrulose => 4-deoxy-4-sulfo-D-erythrose
4-deoxy-4-sulfo-d-erythrulose => 4-deoxy-4-sulfo-d-erythrose
4-deoxy-4-sulfo-D-erythrulose => 4-deoxy-4-sulfo-D-erythrose
4-deoxy-4-sulfo-d-erythrulose => 4-deoxy-4-sulfo-d-erythrose