2.5 SQUARE inactive inactive inactive inactive inactive inactive inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE Acetylene inside SIMPLE_MOLECULE Ethylene inside SIMPLE_MOLECULE Ethylene_space_oxide inside SIMPLE_MOLECULE Acetyl_minus_CoA STATE_TRANSITION R05351 c2 c3 e1 STATE_TRANSITION R05496 c0 c1 e0