Error occurs with uaa 'ac'

[NormanWhc]

`symbol = 'ac'

helm = f"PEPTIDE1{{{symbol}}}$$$$"
b = Converter(helm=helm)
biln = b.get_biln()
seq = Sequence(biln)
seq = correct_pdb_atoms(seq)
mol = Molecule(seq)
romol = mol.get_molecule(fmt='ROMol')
for atom in romol.GetAtoms():
print(atom.GetIdx(),atom.GetMonomerInfo().GetName().strip())`

It reported that if names_cap[name][j] == 'CH3': IndexError: list index out of range

[NormanWhc]

In line 789, if atom.GetSymbol()[0] != 'R':
Is this should be fixed because all the R groups have been removed when building the Sequence object?
And the names_cap of 'ac' may should be contained 4 atoms [CH3, C, O, O]