Force field conformer generated by ARC has atoms too close to each other

Describe the bug
Force field conformer generated by ARC has atoms too close to each other

How to reproduce
Species smile: [O]OCN(C(CCN1C2C=CC=CC=2CCC2=C1C=CC=C2)OO)C
Species xyz:
0 2
O 5.98370000 0.37132000 0.46074000
O 5.70019000 -0.58273000 -0.54099000
C 4.89638000 0.08236000 -1.53025000
N 3.47911000 -0.32753000 -1.58480000
C 2.75429000 0.12718000 -0.38202000
C 1.23215000 -0.04819000 -0.51236000
C 0.50213000 0.59642000 0.67840000
N 0.63095199 -0.22176957 1.91046465
C 1.91775900 -0.44150718 2.46475683
C 2.93204116 0.53225871 2.28433134
C 4.21492887 0.40509149 2.82465662
C 4.52931847 -0.70313101 3.58772941
C 3.55910549 -1.67610048 3.79821252
C 2.26000874 -1.57330963 3.23938139
C 1.34230800 -2.73703090 3.55623530
C 0.17198268 -2.97584869 2.61259074
C -0.88117179 -1.92739539 2.82622894
C -0.60860500 -0.59605047 2.48293610
C -1.60503399 0.36726902 2.72838932
C -2.83907055 0.01721923 3.28052924
C -3.10010228 -1.30875490 3.60302411
C -2.12492120 -2.27788511 3.38009565
O 3.18162000 -0.57639000 0.79475000
O 3.61429000 0.43375000 1.75761000
C 3.36444000 -1.76545000 -1.82144000
H 5.35957000 -0.14014000 -2.49930000
H 4.97056000 1.17379000 -1.42745000
H 2.94372000 1.20385000 -0.26734000
H 0.87508000 0.40834000 -1.44429000
H 0.98694000 -1.11327000 -0.55965000
H -0.54952307 0.69051069 0.37359323
H 0.83474295 1.62168646 0.87168515
H 2.73463317 1.44500815 1.72908443
H 4.95321941 1.18400765 2.65664949
H 5.51805753 -0.81002778 4.02364674
H 3.81837557 -2.54017643 4.40836142
H 0.98296633 -2.61552897 4.58698686
H 1.94613530 -3.65503546 3.53781130
H -0.24918518 -3.96835316 2.81672544
H 0.48954951 -2.98882076 1.56263967
H -1.41153777 1.41478581 2.51035066
H -3.58756991 0.78273301 3.46496066
H -4.05633257 -1.58710101 4.03728002
H -2.33487495 -3.31048390 3.64871419
H 4.57563000 0.38668000 1.54970000
H 3.83868749 -2.33937731 -1.01950162
H 2.31118150 -2.06982729 -1.81935035
H 3.80130490 -2.07692004 -2.77652275