The chemical with the SMILES representation of O=S(=O)(O)c1cc(S(=O)(=O)O)c2c(S(=O)(=O)O)c(S(=O)(=O)O)nnc2c1S(=O)(=O)O has a optimized gas-phase molecular energy at the PBE level of theory of -472.74874 Hartree.
The {#molecule|compound|chemical|molecular species|chemical compound!} with the {SMILES__description} {#representation of |!}{SMILES#} has a {optGasEnergy__names__noun} of {optGasEnergy#} {optGasEnergy__units}.