NUM ATOM_NAME NUM_BOND CONECT TO XX,XX,X.... ATOMS 1 CT1 4 CONECT TO H1 H1 H1 C2 2 H1 1 CONECT TO CT1 3 H1 1 CONECT TO CT1 4 H1 1 CONECT TO CT1 5 C2 3 CONECT TO CT1 O3 O4 6 O3 1 CONECT TO C2 7 O4 1 CONECT TO C2 END