2.2 SQUARE inside PROTEIN p0 inside SIMPLE_MOLECULE cis_minus_2_minus_Chloro_minus_4_minus_carboxymethylenebut_minus_2_minus_en_minus_1_space_4_minus_olide inside SIMPLE_MOLECULE Protoanemonin inside SIMPLE_MOLECULE cis_minus_4_minus_Carboxymethylenebut_minus_2_minus_en_minus_4_minus_olide inside SIMPLE_MOLECULE cis_minus_Acetylacrylate inside SIMPLE_MOLECULE _space_2_minus_Maleylacetate inside SIMPLE_MOLECULE _space_2_minus_Chloromaleylacetate STATE_TRANSITION Protoanemonin cis_minus_Acetylacrylate c1 c3 STATE_TRANSITION cis_minus_2_minus_Chloro_minus_4_minus_carboxymethylenebut_minus_2_minus_en_minus_1_space_4_minus_olide _space_2_minus_Chloromaleylacetate c0 c5 STATE_TRANSITION cis_minus_4_minus_Carboxymethylenebut_minus_2_minus_en_minus_4_minus_olide _space_2_minus_Maleylacetate c2 c4