label: trans-(7R)-N(2)-(7beta,8alpha,9alpha-trihydroxy-7,8,9,10-tetrahydrobenzo(a)pyren-10-yl)deoxyguanosine
label_lc: trans-(7r)-n(2)-(7beta,8alpha,9alpha-trihydroxy-7,8,9,10-tetrahydrobenzo(a)pyren-10-yl)deoxyguanosine