23x731-10（1）（6）（7）（8）（7+8）（8）DNADNADeoxyriboseC5OH7AdenineC5H4N5ThyneC5H5N2O2DeoxyriboseC5OH7PhosphatePO4PhosphatePO4DeoxyriboseC5OH7CytosineC4H4N3OGuanineC5H4N5ODeoxyriboseC5OH74.3109@jpgQ-.--.-x2x2x2x2