Defined in file pcsubstance.asn
No C++ class for INTEGER with named values

PC-Element::= INTEGER {
    -- Illegal Atom Numbers that may be Interpreted to be something else
    a  (255),                                    -- Unspecified Atom (Asterick)
    d  (254),                                    -- Dummy Atom
    r  (253),                                    -- Rgroup Label
    lp (252),                                    -- Lone Pair

    -- Elements
    h  (1), he (2), li (3), be (4), b  (5),
    c  (6), n  (7), o  (8), f  (9), ne(10),
    na(11), mg(12), al(13), si(14), p (15),
    s (16), cl(17), ar(18), k (19), ca(20),
    sc(21), ti(22), v (23), cr(24), mn(25),
    fe(26), co(27), ni(28), cu(29), zn(30),
    ga(31), ge(32), as(33), se(34), br(35),
    kr(36), rb(37), sr(38), y (39), zr(40),
    nb(41), mo(42), tc(43), ru(44), rh(45),
    pd(46), ag(47), cd(48), in(49), sn(50),
    sb(51), te(52), i (53), xe(54), cs(55),
    ba(56), la(57), ce(58), pr(59), nd(60),
    pm(61), sm(62), eu(63), gd(64), tb(65),
    dy(66), ho(67), er(68), tm(69), yb(70),
    lu(71), hf(72), ta(73), w (74), re(75),
    os(76), ir(77), pt(78), au(79), hg(80),
    tl(81), pb(82), bi(83), po(84), at(85),
    rn(86), fr(87), ra(88), ac(89), th(90),
    pa(91), u(92),  np(93), pu(94), am(95),
    cm(96), bk(97), cf(98), es(99), fm(100),
    md(101), no(102), lr(103), rf(104), db(105),
    sg(106), bh(107), hs(108), mt(109), ds(110),
    rg(111), cn(112), nh(113), fl(114), mc(115),
    lv(116), ts(117), og(118)